DC-AC amphibious hair and bears trimmer. The cutting edge has been finished to high precision. Do not allow connect with hard surfaces. If the edge becomes damaged or deformed, it can cause injuries to the skin. Do not press cutting edges against skin to hard since this could result in skin inquiry. Always store the unit in a location out of the reach of children. Built-in two high-capacity battery. Dynamic wear-resistant ceramic blade. With the 4 guide combs, you can cut different style of hair in home. AC-DC adapter: 220VAC~50Hz; DC: 3V 500mA. The normal working 60-90 minutes. Power: 3W. Charging time setting: 5 hrs.