2 in 1: roll and straight dual use 2 in 1.Convenience: One-key boot, 3D anti-scalding comb, straight roll dual use.Constant temperature heating: built-in PTC radiator, constant temperature heating.Easy to carry: Type-c charging head, more convenient to carry.Small and easy to carry: The product is small in size, light in weight, takes up little space, and is easy to take away.Specifications:Diameter of thermal conductor: 16-20 mmHeating comb: hair hot combPower supply: lithium batterycharging method: USB chargingPackage Included: 1* straight hair combIf you have any questions about the product, please contact me, we will contact you within 24 hours and give you a satisfactory answer.Automatic temperature lock for consistent heat throughout use.