portable o2 generator

SPECIFICATIONS:
- Oxygen Supply: 3 liters per min
- Oxygen concentration: 30 %±2%
- Method: oxygen enrichment membrane
- Inhalation method: headset
- Timer: 10, 20, 30 min
- Size: 255L x120W x180H mm
- Power: AC 220v, 50HZ
- Weight: 3kg
- Sounds: < 40db
- Power Consumption: 33W