Built-in 1200mAh rechargeable battery, not bound by wires, free to design your hairstyle anytime, anywhere. -It uses PTC heating technology, quickly heats up in 30 seconds, and achieves consistent temperature control. -There are 2 modes to choose from, straight mode and curly mode, to create different styles. -The brush teeth are coated with plant protein, which can penetrate deep into the hair core to repair damaged hair. -There are 3 adjustable temperature levels, 160℃ is suitable for fine and soft hair, 180℃ is suitable for normal hair, and 200℃ is suitable for coarse and hard hair. Built-in 1200mAh rechargeable battery, not bound by wires, free to design your hairstyle anytime, anywhere. -It uses PTC heating technology, quickly heats up in 30 seconds, and achieves consistent temperature control. -There are 2 modes to choose from, straight mode and curly mode, to create different styles. -The brush teeth are coated with plant protein, which can penetrate deep into the hair core to repair damaged hair. -There are 3 adjustable temperature levels, 160℃ is suitable for fine and soft hair, 180℃ is suitable for normal hair, and 200℃ is suitable for coarse and hard hair.