"Ni-MH battery, Environmental material. Rated voltage: 5V Power: 3W. Charging time: 5 hours Working time: 70 minutes. Rechargeable, ceramic blade, safety protection comb. Waterproof: IPX7, the whole machine is washed with water, making it easier to clean up. Easy haircut in the bath. Quiet design, about 40 decibels, low noise. Digital power display. Guide combs size: 3 ,6 ,9mm. 3 guide combs(3,6,9mm), cleaning brush, lubricating oil ,USB charging line.