helpReliable and easy to maintain. Just keep the intake filter clean and clear of dust. No need of special installation nor wait for deliveries refill tanks like liquid oxygen or oxygen tanks.; Most cost effective source of oxygen therapy. This machine concentrates pure oxygen from room or environment air, so it is nearly no cost. On the other hand, the liquid oxygen need to be refilled and expensive. Long term use can save you thousand of dollars and delivery cost.; The machine can be operated extended hours continuously plugged to a wall or car power outlet.(up to 8 hrs continuously).; FREE BONUS ! International standard adapter(100-240V) safety withstands serious change of power pressure and frequency. It makes this item can be used all over the worldwide. Other seller do not include this free bonus.; Furnished with chargeable lithium battery can be used at home. In a car and even the place without power supply.heart
helpSamson's Expedition 25i Portable PA makes public address more mobile than ever before. This versatile loudspeaker/push-to-talk microphone system provides power and performance in a highly portable package. A combination of ergonomic design and all-inclusive features allow the Expedition 25i to perform anywhere you need to address a crowd.heart
helphigh Concentration can set 1L-5L MODES. Mode 1L, you can get 90% Concentration. Mode 2L--70%. Mode 3L--50%. Mode 4L--40%. Mode 5L--30%.; Support continuous oxygen throughout the day,can continuously work 24 hours; Double excellent filtering performance. Bacteria filter oxygen more safe.; Mute design more comfortable. Add Shockproof mat more secure.; can add water ,give you more fresh ,more clean airheart
helpThe Yamaha Stagepas 600i is a portable PA system packed with features. It offers professional quality sound, new SPX based effects and a USB socket for connecting your iPod/iPhone. With more power, more features, improved functionality, and even better sound, the STAGEPAS 600i sets a new bench mark for portable PA systems! The STAGEPAS 600i, as it's name would suggest, provides greater output power...but it doesn't stop there.heart
helphigh Concentration can set 1L-5L MODES. Mode 1L, you can get 90% Concentration. Mode 2L--70%. Mode 3L--50%. Mode 4L--40%. Mode 5L--30%.; Support continuous oxygen throughout the day,can continuously work 24 hours; Double excellent filtering performance. Bacteria filter oxygen more safe.; Mute design more comfortable. Add Shockproof mat more secure.; can add water ,give you more fresh ,more clean airheart
helpDesigned to be worn over casual pants, the Oxygen Air Overpants are an innovative option for summertime commuting. Designed to be worn over casual pants, the Oxygen Air Overpants are an innovative option for summertime commuting. certified knee protectors and a durable Polyester construction ensure excellent resistance against impact and abrasion, while extended zippered gussets allow effortless fitment and removal of the pants while wearing boots. ALPINESTARS OXYGEN AIR OVERPANTS KEY FEATURES: • Constructed from PU coated, 600 Denier polyester fabric with extended mesh inserts on the thighs for optimum riding comfort. • Accordion panels on the upper back and top of the knees for enhanced flexibility. • Reflective piping for enhanced night-time visibility. • Ergonomically tapered PE comfort padding on the hips. • certified armor on the knees provide high levels of impact protection. • A long zippered gusset running from the knees to the hem enables easy fitment of the pants while wearing boots. • Waist connection zipper allows attachment to selected Alpinestars leather and textile jackets. • Adjustable waist with secure sliding hook closure. • Two external pockets with zippered closures. • Premium YKK® zippers ensure secure fastening at all times. Alpinestars Oxygen Air Textile Pantheart
helpThe 350 Watt Alto MIXPACK Express is the lightest and most portable of all MIXPACK PA's. There simply isn't an easier, more affordable way to get this much clean power, mixing and Alesis DSP effects in one place. It takes only a few minutes from the time you bring MIXPACK Express into the venue to getting it up and running. MIXPACK Express comes complete with two 10 inch speakers and 350 watts of continuous power.heart
helpType:Bookshelf Speaker; Features:Indoor,Outdoor,Bluetooth,Portable,Wireless; Frequency Response:120Hz 18KHz; Tweeter Size (inch):1.8; Channels:1.0 CH; Connectors:3.5mm AUX; Battery Life (Hour):6 hours play time at medium volume; Remote Control:No; Sold As:Single; Operating Range:Up to 10 meters; Connectivity Technology:Bluetooth,Wired; Bluetooth Version:Bluetooth 2.1; Color:Assorted Colors,Black; Net Weight(kg):0.381heart
help1 Station Oxygen Bar PackagePackage includes;1 x 6 Litre per minute 240 Volt Oxygen Concentrator1 x 110 Volt Oxygen Station (Silver)1 x 240-110 V AC Power Convertor4 x Oxygen Aromas50 Nose HosesAll connecting parts and tubing1 Year Return to Base WarrantyOxygen Station DescriptionIlluminated 4 aroma Oxygen Bar Station (infusor), clockwork session timer turns delivery off after set time, 4 gang manual control valve, 110 Volt supplied in silver, other colours are available subject to additional charge dependant on colour required.Sleek stylish design.Dimensions: 13 long - 10 deep - 13 highSupplied with Bar O2 logo insert, customer own logo inserts are available for an additional £25.00.Also additional anti theft digital time totaliser available for £70.00Remote operation option.Product is supplied with 240v to 110 volt convertor and 4 bottles, all tubing and connectors.heart
helpCharge your portable device on the move without the need for mains power. The pocket size Pebble portable battery pack will charge all popular mobile phones, including the iPhone, as well as all generation iPods, digital cameras, camcorders, GPS, Nintendo DS, PSP plus many more.heart
help2 Station Oxygen Bar PackagePackage includes;1 x 6 Litre per minute 240 Volt Oxygen Concentrator2 x 110 Volt Oxygen Stations (Silver)2 x 240-110 V AC Power Convertors4 x Oxygen Aromas100 Nose HosesAll connecting parts and tubing1 Year Return to Base WarrantyOxygen Station DescriptionIlluminated 4 aroma Oxygen Bar Station (infusor), clockwork session timer turns delivery off after set time, 4 gang manual control valve, 110 Volt supplied in silver, other colours are available subject to additional charge dependant on colour required.Sleek stylish design.Dimensions: 13 long - 10 deep - 13 highSupplied with Bar O2 logo insert, customer own logo inserts are available for an additional £25.00.Also additional anti theft digital time totaliser available for £70.00Remote operation option.Product is supplied with 240v to 110 volt convertor and 4 bottles, all tubing and connectors.heart
helpM-Audio Oxygen 88 Controller Keyboard - 88-note graded hammer-action keybed with 4 selectable velocity curves, 8x MIDI-assignable knobs, 9x MIDI-assignable 60mm faders, 9x MIDI-assignable buttons, 6x dedicated transport controls, 4x zones and dedicated zone buttons for layering and splitting sounds on the keyboard, dedicated track up/down buttons, dedicated octave up/down buttons, assignable pitch bend and modulation wheels, 2x dedicated snapshot buttons (advance and mute), 3x unique select buttons for on-the-fly step-through of presets, program changes, and MIDI channels, 3-digit LED, DirectLink mode automatically maps controls to common DAW parameters, factory presets map controllers to popular music software (Xpand!2, Hybrid, Velvet, Strike, Oddity, impOSCar, Minimonsta), compatible with Pro Tools and other digital audio workstation software, 4x velocity curves, 3x pedal inputs (2 sustain pedal inputs, expression pedal input), MIDI out port, USB port for computer connection and bus-powered operation, optional: 9V DC power in, class-compliant with Windows XP, Windows Vista, and Mac OSX. Dimensions: 1353 x 355 x 139mm. Weight: 21kgheart
help3 Station Oxygen Bar PackagePackage includes;1 x 8 Litre per minute 240 Volt High Pressure Oxygen Concentrator3 x 110 Volt Oxygen Stations (Silver)3 x 240-110 V AC Power Convertors8 x Oxygen Aromas200 Nose HosesAll connecting parts and tubing1 Year Return to Base WarrantyOxygen Station DescriptionIlluminated 4 aroma Oxygen Bar Station (infusor), clockwork session timer turns delivery off after set time, 4 gang manual control valve, 110 Volt supplied in silver, other colours are available subject to additional charge dependant on colour required.Sleek stylish design.Dimensions: 13 long - 10 deep - 13 highSupplied with Bar O2 logo insert, customer own logo inserts are available for an additional £25.00.Also additional anti theft digital time totaliser available for £70.00Remote operation option.Product is supplied with 240v to 110 volt convertor and 4 bottles, all tubing and connectors.heart
helpeassin template store home new arrivals featured products hot shopping on sale about us payment info shipping info return policy store categories ultrasonic high frequency microcurrent rejuvenation galvanic skin rejuvenation light therapy dermabrasion skin scrubbers hair lose prevention hair removal massager other enlarge image o 3 super oxygen strong oxidation ozone disinfection body resolve beauty spa new o 3 super oxygen strong oxidation ozone disinfection body accumulated resolve beauty machheart
helpgore unisex oxygen windstopper soft shell cycling leg warmers the gore oxygen windstopper soft shell cycling leg warmers are accessories for professionals these leg warmers are made of warm windstopper soft shell material that help keep out cold drizzle and wind windstopper soft shell offers total windproofness with maximum breathability combining the comfort of a soft mid layer and the water resistance of a shell in one garment windstopper soft shells keep you comfortable with the freedom of moheart
helpOcusil oxygen permeable contact lenses - made to order to your eye doctor's exact specification. May be an option for people who have had difficulty wearing soft lenses or eyeglasses Note: Additional charges may apply for aspheric, toric, or bitoric designs.heart
helpType:MP3; Color:Purple,Red; Dimensions (L x W x D, mm):95x28x15; Net Weight (KG):0.026; Audio Formats:WMA,MP3; Audio Recording:FM; Memory Capacity:8GB; Display Size:3x0.7; Display Type:LCD; Control Type:Button; Connection Type:USB 2.0; Compatible Operating Systems:Windows03/07/vista; Additional Features:FM Radio; What's in the box:1 x MP3 Playerheart
helpon offer all new items 1 x fishing tackle bag 24 x 6 x 6 plus a side pocket 14 x 5 x 1 5 carry straps and shoulder strap folds flat when not in use also 1 7 0 long telescopic rod it is a lineaffe oxygen rod when closed the rod is 1 7 long it has 6 sections and 5 lined runners casting weight is just over 2 ozs 60 g also a reel it is a lineaffe jade rd 20 rear drag gear ratio 5 5 1 it has 165 yards of 6 lbs b s line on the spool suitable for spinning course fishing and light sea fishing check theheart
help2008 Summer NAMM ‘Best In Show' Winner! 2009 m.i.p.a Award Winner for Best Acoustic Amplifier! Portable and Powerful Designed for the singer/songwriter, SoloAmpTM provides exceptional sound quality and coverage in a wide variety of venues. 220Watts of clean, lightweight power drives a line array of six custom high-excursion speakers and a soft dome tweeter.heart
helpgore unisex oxygen windstopper cycling arm warmers the gore oxygen windstopper soft shell cycling arm warmers are accessories for professionals these arm warmers are made of warm windstopper soft shell material that help keep out cold drizzle and wind windstopper soft shell offers total windproofness with maximum breathability combining the comfort of a soft mid layer and the water resistance of a shell in one garment windstopper soft shells keep you comfortable with the freedom of movement youheart
helpThe Samson Expedition XP150 is a portable PA solution, comprising of a pair of passive speakers and a compact 5-channel powered mixer with built-in digital effects. The XP150 provides a clean and powerful stereo sound, ideal for a variety of applications including small gigs, practice sessions, speeches, presentations and more. The speakers in the XP150 pack can also tilt back for use as floor monitors, which adds to their versatility.heart
helpO2 FIT 18 MEDICAL GRADE OXYGEN CARTRIDGE KITDisposable (single use) oxygen cartridge system, will fit convieniently into a coat pocket or handbag. Each cartridge will supply oxygen for 9 minutes of use. An ideal solution for emergencyapplications where size is a major issue.O2 Fit 18 litre capacity Oxygen cartridge kit,Pressure regulator and contents gaugeplastic carrying case,Integral mask.Supplied complete with 3 X 18 litre disposable O2 cartridges. (Additional cartridges can be purchased from seller)This kit containsMEDICAL grade oxygen.THIS OXYGEN KIT USED IS IDEAL FOR ANY SPORTS, HEALTH & SAFTEY OR EMERGENCY APPLICATIONS.heart
helpgore men s oxygen short cycling bib tights with insert the gore oxygen short cycling bib tights with insert provide maximum comfort and protection they are lightweight and stretchy road cycling bib shorts with optimized moisture management almost unnoticeable bibs and bottom hem paired with a long distance seat insert for maximum protection and comfort in the saddle fabric technology gore cycling clothing is made using highly technical fabric technology the winter apparel which includes base layheart
helpThe Samson Expedition XP308i gives you the power to perform wherever you need it. With powerful, full-range sound in an all-inclusive portable package, the Expedition 308i is an ideal single system solution for a variety of live sound applications.heart
helpnext day delivery 30 day returns home delivery returns about us gore oxygen windstopper short sleeve half zip sport tee top cycling jersey gore oxygen windstopper jersey small great for riding in colder conditions the gore oxygen windstopper jersey looks the business when out and about on your bike gore oxygen windstopper jersey small extra info reflective logo on front and back long back protects the lower body reflective piping for better visibility fleece lined for comfort and insulation tighheart
helpAdopting the same principles of portability and simplicity that made Samson's Expedition 308i so popular, the Expedition 510i (XP510i) is an all-in-one portable PA system that offers outstanding power and convenience. The pro-level performance of the XP510i begins with a pair of dual 2-way speakers with 10-inch woofers, complemented by a 1-inch titanium tweeter horn. These speakers will provide dynamic low-end qualities and broad dispersion in any performance space.heart
helpOur Nirvana Lavender flavour powdered Oxygen safe Aroma comes concentrated with both aroma and coloring. One small scoop of this powder mixed with 8 oz of water gives a colorful aromatic scent to your oxygen.heart
helpSamson makes public address simple with an all-in-one portable sound system that offers everything you need to deliver a professional and memorable presentation: The Expedition 40i. To ensure pristine, full-range sound, the Expedition 40i (XP40i) employs a 6-inch woofer and a 1-inch high frequency driver. The unit features a 40 watt Class D amplifier that is perfectly matched to the driver for high efficiency and low current draw.heart
helpgore men s oxygen windstopper soft shell cycling jersey the gore oxygen windstopper soft shell cycling jersey is a innovative short sleeve jersey made from selected materials for maximum breathability and next to skin comfort stretchy windstopper fabric inserts on shoulder breast upper abdomen and in the kidney area protect from wind and weather storage space in pockets that won t sag windstopper soft shell offers total windproofness with maximum breathability combining the comfort of a soft midheart
helpRycote Portable Recorder Audio Kit H-4N, Schockmountset for Zoom H4N to fix Pocket-Recorders on camera adapters set contains 1x Recorder Suspension Shockmount, 1x Soft Grip Handle, 1x Mini-Windscreen Medium for Pocketrecorder RY-046001heart
helpWhether battery powered or plugged in, the BA-330 delivers high-performance sound that defies its size. Its digital stereo amplifier drives four 6.5 inch stereo speakers and two tweeters, positioned for wide stereo projection. It's the ideal, all-in-one portable PA solution for small music venues, worship events, conferences, seminars, business meetings, and much more.heart
helpMedeli Cubeat Portable digital Drum for iPad2/3,six velocity sensitive pads with light rings, two pedals for Kick Drum and HiHat, 2 Drumsticks, iPad Table Stand Adapter, included Connection Cable: Dock to iPad Cable, Dock to USB Cable, Power-Cable for optional USB Power Supply (#278119), Plug & Play, build-in rechargeable Battery with Status LED, Stereo Headphone Out 1/8" TRS, incl. free App for download (Apple App Store) with Groove Coach and Playalong Songs,heart
helpThe Yamaha Stagepas 400i is a portable PA system packed with features. It offers professional quality sound, new SPX based effects and a USB socket for connecting your iPod/iPhone. With more power, more features, improved functionality, and even better sound, the STAGEPAS400i sets a new bench mark for portable PA systems! The STAGEPAS 400i, as it's name would suggest, provides greater output power...but it doesn't stop there.heart
helpRycote Portable Recorder Audio Kit LS-100, Schockmountset for Olympus LS-100 to fix Pocket-Recorders on camera adapters set contains 1x Recorder Suspension Shockmount, 1x Soft Grip Handle, 1x Mini-Windscreen Medium for Pocketrecorder RY-046022heart
helpClearer fuller sound than you d expect from a system this smallPortable design that makes it easy to bring from room to room or even to the patioWireless connection to Internet radio and your music libraryWorks via your existing Wi Fi network with no additional equipmentheart
helpAccucon oxygen permeable contact lenses - made to order to your eye doctor's exact specification. May be an option for people who have had difficulty wearing soft lenses or eyeglasses Note: Additional charges may apply for aspheric, toric, or bitoric designs.heart
helpThe Klarstein Mini Taverna cooling and warming box cools drinks in the summer and keeps food warm in the winter.The red cooler is easy to transport thanks to its folding carry handle and low weight. The warming box can be powered via mains power or through the car cigarette lighter when on the road. A removable shelf insert allows the storage of smaller food or drinks. Additionally, the box is easy to clean, contaminant-free and economical in consumption.The Klarstein cooling and warming box is the ideal companion for picnics and camping trips, as well as for use as a portable refrigerator in the car or as a spare fridge for smaller drinks at home.heart
helpA daily wear GP lens material with enhanced wettability and oxygen transmission (Dk) for advanced levels of instant and long-term wearer comfort. Suitable for various wearing modalities. May be an option for people who have had difficulty wearing soft lenses or eyeglasses Note: Additional charges may apply for aspheric, toric, or bitoric designs.heart
helpIntroduction Oxygen is a basic human need. We would not survive without it. The air that we breathe accounts for around 21% oxygen. It can be sufficient for most people with healthy lungs, but for some people with certain health conditions whose lung function is impaired, the amount of oxygen that is obtainedheart
helpFREE DELIVERY! This machine concentrates pure oxygen from room or environment air, so it is nearly no cost. On the other hand, the liquid oxygen need to be refilled and expensive. Long term use can save you thousand of dollars and delivery cost; The machine can be operated extended hours continuously plugged to a wall or car power outlet; Furnished with chargeable lithium battery. It can be used at home, car, even travel; Airflow Rate/Outlet: Approx. 4.5L/Min. Oxygen Concentration: Approx 30% (standard atmospheric pressure); International standard adapter(100-240V) safety withstands serious change of power pressure and frequencyheart
helpFully filtrate harmful substances in the air, such as dusts, virus and bacteria ,and refresh the air with rich oxygen, environmentally and health friendly. Completely physical rich oxygen supply. much safer, more environmental and health friendly Low noise ,mute motor, physical oxygen generation Concise film button ,simplified operating procedure Convenient earphone breathing apparatus; Safely broad-spectrum, oxygen concentrationsatisfying varied demands Portable and light Most cost effective source of oxygen therapy. Ergonomic Design, harmonious airflow; specialized chargeable battery and charger, suitable for traveling and husehold use Furnished with chargeable lithium battery FREE BONUS ! International standard adapter CE Certification, ISO9001 Quality Certification; The benefits of rich oxygen Refurbishing brain activity Energizing physical conditions Rich Oxygen generation for skin care Relaxing sub-health status caused by fatigue Reducing hazards of cigarettes and alcoho Sterilizing and deodorizing Environmentally and health friendly product; Oxygen is a basic human need. We would not survive without it. The air that we breathe accounts for around 21% oxygen. It can be sufficient for most people with healthy lungs, but for some people with certain health conditions whose lung function is impaired, the amount of oxygen that is obtained through normal breathing is not enough. Oxygen concentrator can separate oxygen and nitrogen molecules from each other for generation of high concentration oxygen. Trapping the nitrogen out of the compressed air and provides supplemental oxygen by compressing room air to 4 atmospheres of pressure. This concentrates the oxygen in the compressed air without the need of adding chemicals.heart
helpStyled design, selected material, compact structure, simplified ear-phone shaped oxygen.Mild airflow supplied for a harmonious atmosphere.; Advanced technology incorporated for precise oxygen concentration control to 29+/-2% for rich oxygen achievement.Simplified concise control system with intensive design under the control of only 1 knob.; International standard adapter (100-240v) safely withstands serious change of power pressure and frequency.; Furnished with Chargeable battery can be used at home, in a car and even the place without power supply.; Direct Currency and brushless motor ensuring quiet running and economical power Consumption. Vector frequency conversion bringing powerful driving.heart
helpFREE DELIVERY! This machine concentrates pure oxygen from room or environment air, so it is nearly no cost. On the other hand, the liquid oxygen need to be refilled and expensive. Long term use can save you thousand of dollars and delivery cost; The machine can be operated extended hours continuously plugged to a wall or car power outlet; Furnished with chargeable lithium battery. It can be used at home, car, even travel; Airflow Rate/Outlet: Approx. 4.5L/Min. Oxygen Concentration: Approx 30% (standard atmospheric pressure); International standard adapter(100-240V) safety withstands serious change of power pressure and frequencyheart
helpSmall and lightweight; Delivers up to 3lpm of constant flow oxygen and up to 6lpm (equivalent) in PulseDose mode; Supplied with rechargeable lithium ion battery, AC / DC adapters and mains lead.; Low maintenance - the iGo does not require manufacturers servicing for the first three years.; Ideal for travel - the iGo is approved by the FAA for use onboard an aircraftheart
help1. 29%+/-2% concentration, life standard clean rich oxygen supply 2. Efficient oxygen supply; 3. Concise film button, simplified operating procedure 4. Portable and light; 5. Energy efficient, Economical Consumption 6. Convenient earphone breathing apparatus; 7. Low noise, mute motor, physical oxygen generation 8. Safely broad-spectrum, oxygen concentration satisfying varied demands; 9. Ergonomic Design, harmonious airflow 10. Standard parts: worldwide voltage adapterThis is a supplementary medical equipment and is not intended for serious disease or thosewho stay alive solely on medical oxygen. Optional parts: specialized chargeable battery and charger, suitable for traveling and household use.The latest membrane separation technology,1. In cooperating the latest biological membrane separation method for rich oxygen generation based upon the theory of different dissolving penetration rate of molecules in membrane. 2. The appliance generates pure rich oxygen. 3. Macromolecule membrane can fully filtrate harmful substances in the air, such as dusts, virus and bacteria, and refresh the air with rich oxygen, environmentally and health friendly. Completely physical rich oxygen supply, much safer, more environmental and health friendly.heart
helpInogen One G3 is a portable oxygen concentrator designed to provide maximum freedom.; Suitable for home use, portable and travel. Inogen One G3 produces oxygen without needing to be recharged with oxygen tanks.; Independence: The patients who choose to use Inogen One G3, both at home and away, will be able to achieve the independence they had lost; ideal not only for routine errands or short trips, but for real independence and spontaneity.; Inogen One G3 allows you to travel by plane, without worrying about the duration of oxygen. Inogen One G3 is a portable device designed to satisfy the needs of the patient.heart
helpOxygen purity 30%~90%. Oxygen Flow 1L/min-5L/min. Output Pressure 30kPa-70kPa; Double excellent filtering performance. Add Shockproof mat more secure; Intelligent control convenient to use. Mute design more comfortable. Bacteria filter oxygen more safe; Support continuous oxygen throughout the day, can continuously work 24 hoursheart
helpOxygen purity 30%~90%. Oxygen Flow 1L/min-5L/min. Output Pressure 30kPa-70kPa; Double excellent filtering performance. Add Shockproof mat more secure; Intelligent control convenient to use. Mute design more comfortable. Bacteria filter oxygen more safe; Support continuous oxygen throughout the day, can continuously work 24 hours; Professional Product! Surprise Price!heart
helpOxygen purity 30%~90%. Oxygen Flow 1L/min-5L/min. Output Pressure 30kPa-70kPa; Double excellent filtering performance. Add Shockproof mat more secure; Intelligent control convenient to use. Mute design more comfortable. Bacteria filter oxygen more safe; Support continuous oxygen throughout the day, can continuously work 24 hoursheart
helpOxygen Generating Method: Membrane Separation Method (Oxygen Enrichment Membrane); Lightest portable oxygen concentrator; Oxygen Concentration: Approx 30%; Airflow Rate: Approx. 3L/Min.; Can be used at home or in a carheart
helpSecond hand Home oxygen concentrator (used); Equipment with casters, electrical two pin plug; Accessories not included; Weight : 24 kg, oxygen concentrator delivers 5L O2 / min; The plastic fairing of the device is susceptible to present some scratches and stains which not disturb the proper operation of the deviceheart
helphigh Concentration can set 1L-5L MODES. Mode 1L, you can get 90% Concentration. Mode 2L--70%. Mode 3L--50%. Mode 4L--40%. Mode 5L--30%.; Support continuous oxygen throughout the day,can continuously work 24 hours; Double excellent filtering performance. Bacteria filter oxygen more safe.; Mute design more comfortable. Add Shockproof mat more secure.; can add water ,give you more fresh ,more clean airheart
