Adjustable Handle 32 Levels Recumbent Exercise Bike Oxygen --The filter of the oxygen

--The filter of the oxygen generator can remove dust

Wavelength    420nm/520nm/590nm/633nm/850nm

Packing size 125*66*92cm

it is necessary to charge the battery in a timely manner

Does this machine make its own oxygen or is there a tank that has to be recharged

Adjustable Handle 32 Levels Recumbent Exercise Bike Oxygen --The filter of the oxygenSpecifications Model Number HNT LE E001A Type Training Apparatus Product name rehabilitation leg and hand Function Limbs exercise training Application Brain Disease, Nervous disease, bone and joint disease Warranty 1 Year Assurance Size 170*89*170cm Certificate CE Model HNT LE E001A Packing wood case Weight 130kg