FreeStyle Comfort Portable Oxygen Concentrator AS200 by CAIRE




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The future is here! With its ergonomic shape, the lightweight and affordable FreeStyle® Comfort™ AS200 rests against the natural curves of your body, making it comfortable to wear on the go. FAA approved for commercial air flights and equipped with user replaceable batteries, this new oxygen therapy device allows you to extend your time away from home. And extended warranty options offer peace of mind. Its time to expect more from your portable oxygen concentrator.


  • Unlimited Ambulation - Gives oxygen users unprecedented freedom that promotes an active lifestyle and higher quality of life
  • Lightweight Solution - Weighing only 5 lbs., the FreeStyle® Comfort™ can go anywhere you want to go
  • UltraSense™ Technology - Most sensitive pulse dose breath detection technology on the market, ensures a pulse of oxygen is delivered to you when you need it
  • Enjoy the convenience of wearing it with or without your carry bag by simply attaching the no-slip, padded shoulder strap
  • User-replaceable batteries allow you to extend your time away from home and stay active with up to 4 hours of battery life (8-cell battery pack)
  • Battery pack will re-charge anytime AC or DC power is connected and is easily accessible from the front of the device
  • 8-cell battery pack provides up to 4 hours battery duration at setting 2
  • 16-cell battery pack provides up to 8 hours battery duration at setting 2
  • Ergonomic, curved silhouette rests against the natural curves of your body making it more comfortable to wear when you are out and about
  • Easy to use full-color interface will raise the bar on what you expect from your portable oxygen concentrator
  • Lightweight - weighs only 5 lbs. with 8-cell battery pack
  • Pulse settings 1 - 5 covers widest range of patients with a single device
  • Can swap and exchange additional batteries for longer duration
  • Easily wearable with a handle or shoulder strap
  • Fully functional on AC power, DC power or rechargeable battery pack
  • FAA approved for commercial airline use
  • UltraSense™ technology quickly detects and pulses to ensure delivery in the first one-third of each breath 
  • Up to 1050 mL/min oxygen output at setting 5 to saturate high volume patients
  • Includes FreeStyle Comfort portable oxygen concentrator, 1 battery pack (8-cell or 16-cell), AC/DC power supply and cords, and carry bag with shoulder strap
  • Additional spare battery packs and desktop battery charger also available
  • Limited 3 year warranty on concentrator and 1 year on parts, accessories and batteries

To speak with a customer service representative, call 1-800-956-6616

Physician's Prescription Required
Please fax the prescription to 800-956-6282 or email it to
  • Gives oxygen users freedom for an active lifestyle
  • Ergonomic, lightweight design weighs only 5 lbs. with battery
  • UltraSense technology ensures oxygen is delivered with each breath
  • Operates with AC power, DC car adapter or battery
  • Battery provides up to 4 or 8 hours at setting 2
  • FAA approved for airline use
  • Pulse settings 1- 5
  • Includes AC/DC power cords, carry bag and choice of battery
Flow Rate: Pulse settings 1-5
Dimensions: 8-Cell Battery: 10" x 7.3" x 3.1"
16-Cell Battery: 11" x 7.3" x 3.1"
Weight: 8-Cell Battery: 5 lbs.
16-Cell Battery: 6 lbs.
Sound Level: 43 dbA at Setting 2
Max Battery Duration: 8-Cell Battery: 4 hours at Setting 2
16-Cell Battery: 8 hours at Setting 2
Battery Re-Charge: 8-Cell Battery: 3.5 hours
16-Cell Battery: 6 hours
AC Power: 100-240 VAC, 50-60 Hz
DC Power: 11-18 VDC (10 Amp max)
Operating Temperature: 41°F - 104°F (5°C - 40°C)
Operating Humidity: 15% - 95% RH, non-condensing
Operating Altitude: Up to 10,000 feet (3,048 meters)
O2 Concentration: 90% (+5.5%/-3%)
O2 Output
Setting 1: 210 mL
Setting 2: 420 mL
Setting 3: 630 mL
Setting 4: 840 mL
Setting 5: 1050 mL
Limited Warranty
FreeStyle Comfort: 3 years
Parts & Batteries: 1 year
Recommended Tubing: Nasal cannula w/ max 7 feet tubing


Physician's Prescription Required
For your convenience, you may have your physician fax the prescription to 800-956-6282