[Easy to carry] Household type, compact size, small volume, 1L adjustable, to meet the needs of different people, 93% 3%. Long life spanHigh life span, strong performance, Easy to operate, Plug in fast oxygen production, Eight levels of filtration oxygen absorption more peace of mind. The water tank can be wetted oxygen, So that the throat will not dry. Wide range of applications (the elderly, pregnant women, sports people, brain overload, stress, children, etc. can be used), Improve the quality of life, Only good health, Life will be good. packing list1.1L Oxygenerator X 12. User manual X 13. Nasal oxygen cannula X 14. Atomization accessories (atomization cup, atomization tube and mouthpiece)5. Filter cartridge X 16. Fuse tubes (T10AL250V 5 X 20) X 2 pieces7. Power cord