Personalized Temperature & TimerThe temperature varies from 300℉ to 390℉ to fit different hair types (lower temp for fragile hair; higher temp for coarse hair). 8-18s auto curling timers allowing to form a perfect loose or tight curls easily, save a lot of time. | Ionic Ceramic TechnologyThe auto hair curler is made of professional ceramic tourmaline, it can produce a potent mass of negative ions to seal moisture into your hair and protect each cuticle, maximum eliminate frizz and static electricity. | 60min Cord-free Run TimeMicro USB 5V/2A charge cable included. 3-4 Hours fully charged time can work for up to 60 minutes. 5000mAh large battery capacities can be used as a power bank to charge your phone or table devices. |