PTC ceramic heat, automatic constant temperature hair care, 30 seconds of rapid heating, reduce hair damage, gentle care hair. 3D comb teeth, matrix distribution, multi-piece auxiliary comb tool, anti-knot, multi-piece heat aluminum plate comb teeth, constant temperature three-dimensional heat, comb straight hair.60 minutes of no operation automatic shutdown, intelligent power-off is safer, guarding your little careless. Protect personal and public safety.10 million high-density negative ions neutralize the positive charge on the hair, eliminating static electricity, locking in the hair scales, smoothing frizz, reducing split ends, and making the hair soft and supple