Material: ABS, built-in: 200mah battery, product size: 41 * 65 * 130mm, with USB cable, [temperature 2nd gear] 1st gear - [green light 65 degrees], 2nd gear [blue light 85 degrees] 2 Adjustable TemperatureHeated eyelash curlers provide 2 types of temperature, the green light is low temperature 149/65, suitable for soft and thin eyelashes.Blue lamp is high temperature 185/85,suitable for hard and thick eyelashes . Choose the temperature according to the type of eyelashes, which is safe for your lashes without causing burns or damage. Type-C Fully Charged Once Lasting 3 WeeksEyelash Curler Rechargeable build in 200MAH battery, charge with the included USB Type-C Cable and last up to more then three weeks to save battery cost. The small size makes it easy to put in your bag allowing you to take it wherever you go. Easy to UseAll operated with one key.Pressing the power button 1.5s, start to preheat 10-30sclip eyelashes for 3-5s, and move the handle part slowly above 90 degrees then use mascara even better.