Product description

• Oxygen Concentration - 90%+/-3%
• Oxygen Flow Max - 1-2 liter/min
• Warranty - 3years for main unit , 1 year for Sieve Bed and Battery
• Warm-Up Time - 2 minutes
• Weight - 4.37 lbs. 1.98kg (includes battery)
• Oxygen Flow - Pulse dose delivery system Five flow settings 1,2,3,4,5
• Battery - Recharge approximately 4 hours with AC or DC power
• Noise Level - 49 Decibels*@setting 2 
• Display Screen -2.8 inch
• Operation - Simple control functions and easy-to-read LCD display
• Use - Designed for 24/7 use 

PULSE SETTING          BATTERY DURATION
            1                                     5 h 24 min
            2                                    4 h 48 min
            3                                    3 h 18 min
            4                                    2 h 30 min
            5                                    2 h 06 min
            6                                    1 h 42 min