Debire Beauty Straight Ceramic Fast Hair Straightening Brush - Pack of 1 >Product’s Information: Providing the fast & professional hair straightening. It allows you to get ready quickly. The fast heat up and fast heat recovers 80 - 230 °C (180-450 °F) precision temperature digital display. When the panel temperature is 230 °C, the top of the comb teeth temperature is just about 55 Celsius (130 °F). It is easy to convert °C to °F, just press “+” and “-” at the same time. Biological activity will adjust your hair's oil balance that will be improving your sleep quality. > Temperature setting guide: For thicker and curly hair: 210-230 °C For common hair:  190-210 °C For thin and soft hair: 170-200 °C > Operation Instruction: Keep the hair clean, dry and neatly before you combed. Connect the comb and press the switch for 3 seconds, the item will be on, press “+” or “-” to set a temperature. Use the comb to brush your hair from up to down, constant repetition for several times, you will have the shiny and straight hair. Press the switch for 3 seconds to off it, also this product is auto-off in 1 hour. > Straightener Strictly Warning: Do not use it in the bathroom or any wet place; also into fire or external heating, it is easy to cause damage. Do not disassemble or repair the item by yourself. Do not allow children under the age of 14 to use this product in the absence of adults.