product properties: Battery capacity: 5200mah Battery voltage: 3.7V Power: 15W Lithium content: 0.75 g. Battery type: Li-ion rechargeable battery The charging time of the product is about 4.5 hours, the battery life is about 40 minutes for uninterrupted use, and about 1 hour for intermittent use. Built-in battery, USB cable charging color: gray Packing: 23 9 7.5CM Product: 0.65KGSuitable for travel: The portable curling iron can be easily put into your travel bag, and it can last about 70 minutes on a single charge, which is very suitable for going out and styling. Comes with a carrying bag to avoid damage during transportation. You can easily carry it anywhere. It will automatically shut down after 10 minutes of inactivity. Using ceramic technology, our curling iron is made of ceramic coating, made of professional ceramic tourmaline, adding nano silver to heat it quickly, generating negative ions to seal moisture into the hair and protect each cuticle to minimize frizz And static electricity. Provides smoother, shiny and bouncy curls. In addition, the unique thermal insulation chamber prevents burns to fingers and forehead, and even scalp. Intelligent heating control: The automatic crimping machine has 3 adjustable heating settings, ranging from 300 F-390 F (150 C-200 C) coiling time is 12s, 14s, 16S, 18S coiling The direction (left and right) meets all your requirements for the winding style. Safe and efficient: wireless automatic curling machine with curling room. The curling room is equipped with safe and non-toxic insulating materials, which can protect the skin and eyes from burns during use. The PI film heats up quickly, improves efficiency, and completes the perfect hairstyle in a few minutes. Cordless automatic hair curler, the latest cordless curler equipped with a smart induction motor, bid farewell to bad curling effects, even if you are a novice! No skills required, just one button can automatically make beautiful curls or waves anytime, anywhere.