Air flow volume: 3L/ min
Oxygen concentration: 30% (standard atmospheric pressure)
Power: 20W
Voltage: 12V DC  
Noise: <45dB
Using temperature: -10-40 degree
Using humidity: <80%RH
Storage temperature: -10-40 degree
Storage humidity: <80%RH
Dimensions: Product: 235 (L) x 120(W) x 295(H)mm
Weight: 3.6kg(including 0.5kg spare parts)

Parameters:
30% concentration rich oxygen supply
Performance: Efficient oxygen supply
Design: Concise top panel for simplified operating procedure
Carry: Portable and light
Energy efficient
Nano ear phone: Oxygen supplier free from contamination
Low noise: Mute DC brushless motor and biological oxygen generation
Safety broad-spectrum: Oxygen concentration satisfying varied demands
Ergonomic design: Harmonious airflow