Usage method: Press once to start, short press to adjust gear, long press for 1.5 seconds to turn off, 30 minutes automatic power-off protection.   Features: One comb makes it smooth in seconds: Contact larger surface base, let each hair three-dimensional uniform heating, single comb more hair, 30 seconds rapid heating, 2 minutes comb straight, greatly reducing modeling time.  Reduce hair damage; 500W high concentration negative ion can repair the damaged hair scales, lock the hair moisture and refuse the dry straw hair.  Three in one function: Men's beards, men's hair styling, women's styling and straight hair.  30 seconds fast heating: The PTC constant temperature heating technology is used to rapidly raise temperature and stabilize at the specified temperature, so as to avoid the hair quality damage caused by the temperature fluctuation.   Features: Material: plastic nylon;  Plug type: US;  Heating plate: PTC ceramic heating plate;  Rated input: 110v-240v;  Output power: 60W;  Gear: 3rd gear adjustment (1st gear 248 ° F, 2nd gear 320 ° F, 3rd gear 450 ° f);  Product size:200*30*10mm;  Package size:26*8*5cm;  Package weight:320g;   Package include: 1 x Hair Straightener Brush;  1 x User Manual