Professional tourmaline ceramic barrel quickly heats up and gives you a smooth, massive shine and bouncy curls without all the damage. A large LED display presents clear temperature, direction, and timer, it presents more readable and convenient use.Our hair curlers can be heated quickly and their cordless design can maximize your modeling efficiency. It is equipped with a safe and non-toxic insulating material inside the curling room which can protect you from burns when you use it.150-200℃ temperature selections, 8-18s auto curling timers, as well as curling direction (left and right) together, allow forming of perfect loose or tight curls easily, saving a lot of time. Built-in 2500mAh lithium-ion battery enables super convenient cordless use. Meanwhile, it can also be used as a power bank.The barrel will auto-spin around and wrap a section of hair into the curling chamber. Easy to carry when traveling, can curl your hair anytime and anywhere, far away from the trouble with the line. Specifications: Battery: 5000mA, 3.4W Perm time: 8s /10s /12s/ 16s 18s 8 ~ 18s Charging is battery life: 2-3 hours of charging and 1 hour of use Thermal conductor material: environmentally friendly alloy Battery capacity: 2500MAH Battery voltage: 3.7V Battery Watt Hours: 9.25WH Lithium content: 0.75g Battery type: Lithium-ion rechargeable battery Battery composition: nickel cobalt manganese