OxyGo NEXT is the next generation of portable oxygen. Its ground-breaking size and battery life have never been seen before at this high of an oxygen dose, and it is setting the standard for portable oxygen concentrators. OxyGo NEXT has user-replaceable batteries, sieve beds and an easy to read LCD display with simple controls. And it can be charged at home or on the go—giving you the freedom to embrace what’s NEXT! Designed for 24/7 use Only 4.7 lbs.* with up to 13 hours of battery life* No carts or tanks required OXYGO NEXT COMES WITH: Carry bag with shoulder strap Wall charger Car charger 7ft Nasal cannula 5 year warranty Easy to follow instructions! Bluetooth available on OxyGo NEXT POCs. Single battery or Double battery OxyGo NEXT Specs Size, Weight Single Battery: (L) 7.19" x (W) 3.26" x (H) 8.15"; 4.74 lbs. / 2.15 kg. Double Battery: 28 (L) 7.19" x (W) 3.26" x (H) 9.03"; 5.73 lbs. / 2.60 kg. Oxygen Flow Six pulse flow settings: 1, 2, 3, 4, 5 & 6 Power AC Power Supply: 100-240 V, 50-60 Hz (auto-sensing to allow worldwide use), DC Power Cable for mobile use in car. Battery Single Battery: Up to 6.5 hours. Recharge up to 3 hours with AC or DC power. Double Battery: Up to 13 hours. Recharge up to 6 hours with AC or DC power. Noise 38 Decibels (at flow setting 2) Warranty 5-year on the OxyGo Next POC, 1-year on battery, sieve-column filters and accessories (AC/DC power supply, carry case) Operation & Use Simple control functions and easy-to-read LCD display. Designed for 24/7 use, at home or away! This item is non-returnable USER MANUAL