Pure oxygen concentration box. 
The oxybox generates 40-90% oxygen-containing clean air using a special filtration technique. It has no harmful effects or side effects.
Kapacity
1L- 90% ± 5 Concentration
2L - 75% ± 5 Concentration
3L - 55% ± 5 Concentration
4L - 45% ±5 Concentration
5L - 40% ± 5 Concentration
Operating Volume : 45 dB
Volt : Ac220V ± 10V
Watt: 120W 
Weight : 6.5 kg
NOTE: Use only with distilled water!