Use AC 110-240V power supply, rotate the power switch, preheat for 2 minutes, perm to reach the required temperature, can be used.Please set the appropriate temperature after use, constant temperature perm does not hurt hair.Function: constant temperature control infrared hair care automatic power offAnti-scalding power: less than 25WSource: Mainland ChinaPower mode: plug inColor classification: pinkTemperature control device: 3 gears and aboveBest modeling time: less than 1 minuteThermally conductive material: tourmaline ceramicsLine length: 1.5M-2MType: volume, straight hair two in oneAdditional features: constant temperature controlApplicable hair: wet and dryThermal conductor diameter: 21mm (inclusive) -30mm (inclusive)