... , 20ml: 800ml/h, 10ml: 160ml/h*KVO: 1ml/hPower supply: AC90V-230V+-10%, 50Hz/60Hz, Li-battery: DC11V 2000mAhThe battery ... weight: 3kg*Packing size: 3.5kgPls notice that we also supply oxygen concentrators with CE, oximeters with CE/FDA, monitors, aspirators, ... us if you have these kind of needs.We also supply oxygen concentrators, pulse oximeters, infuion pump, patient monitors, ultrasound scanners, ...