Commodity 's information: Thermal conductor diameter: 16MM-20MM Thermal material: tourmaline ceramic Power: 25W-39W Best Costume time: 3-5 minutes Applicable hair: dry hair Temperature control: 6 segment Appearence: Plastic Maximum temperature: 200 ℃ The lowest temperature: 130 ℃ Type: Multifunction Service: one year warranty Heat generation: PTC Voltage: 110V-220 Power cord length: about 2 meters, 360 degrees rotation. The Nexgadget hair straightener brush gives quick professional result of silky straight hair in minutes that you dreamed of, allows you get ready quickly for going out in rush morning hours, instead of wrestling with the blow dryers day after day. This hair brush for straightening hair leaves your hair silky, straight and smooth from the very first stroke. It's heat up to 293℉ (145℃) in 30 seconds, max 392℉ (200℃) , auto keep constant temperature at 293℉(145℃), your hair will be basically settled in 8-10 seconds. Temperature setting guide: Customized set 266℉ (130℃) for the first time, or a soft thin hair; Customized set 293℉ (145℃) for common slight curly hair; Customized set320℉ (160℃)/ 338℉ (170℃) for blonde, dyeing or colored hair; Customized set374℉ (190℃)/ 356℉ (392℃) for very thick, curly and hard to straighten; Notes: Due to manual measurement and light, the error of 1-3cm and a little color difference are allowed. The actual object shall prevail.