Batteries take approximately 4 hours to fully recharge. Buying Guide: Where to Purchase Purchasing an AirSep Focus requires a medical prescription . AirSep Focus Portable Oxygen Concentrator - SpryLyfe
Features "UltraSense" technology, which is highly sensitive and ensures oxygen is delivered with every breath, even during shallow breathing.
The unit is FAA-approved for use on commercial flights and operates on universal power (AC/DC), making it suitable for international travel and car charging. Battery Life & Power Options
The AirSep Focus, manufactured by CAIRE, is recognized as the world's smallest and lightest medical-grade portable oxygen concentrator. Weighing just 1.75 lbs (0.8 kg) for the unit itself, it is designed specifically for active patients who require low supplemental oxygen (pulse dose setting of 2) without the burden of heavy equipment.