Specification: *LED display and finger touch control. **Super long stand-by time with lithium batteries. *USB connect can do power charge anywhere. **Anti back flow system prevents contamination. *10 adjustable suction levels and double pumping styles. TPU air pumping pole, never go yellow. **Special night lights design, easy to use in night. * 100-240V/5V, 1A,suitable for adapter or chargeable battery