The cordless auto hair curler features a ​ceramic coated plate​ for even heat distribution and reduced hair damage. It is equipped with a high-capacity ​ICR21700-4000mAh / 5000mAh Li-ion battery, supports approximately ​3 hours of charging time, and provides ​over 60 minutes of cordless working time. The barrel size is ​55φ16mm, suitable for creating various curl styles. For safety and energy saving, it includes a ​5-minute auto shut-off function​ and features ​two indicator lights​ that display the temperature settings of ​160°C and 190°C.