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This is a supplementary medical device and NOT intended to be used for ANY prescription purpose.If need MEDICAL machine pls buy B01MXZXUEA1L/min:90% purity, 5L/min:30%
Power Supply: AC110V ONLYif need 220V, pls leave us a message
Car Adaptor NOT included, if need car adaptor pls buy B01IOH7VY8
Battery NOT included, if need battery pls buy B0785LHVKW