〇 Easy-to-Use Brush Type This cordless brush-type hair iron is easy to use, just like combing your hair. It's designed for adding volume to short hair and easily straightening wavy hair. 〇 4-Step Temperature Settings The temperature can be set in 4 steps: 140℃, 160℃, 180℃, and 200℃. It can be easily operated with a single button. 〇 Automatic Power-Off Function Charging time is about 3.5 hours (*1), and it can be used for about 30 minutes (*2). The lamp on the main unit turns off about 10 minutes after the power is turned on, and the power automatically turns off. [Product Contents] ・Main unit ・USB charging cable (USB Type-C) ・Brush cap *AC adapter is not included. We recommend using a 5V/2A AC adapter. [How to Use] ・Turn on the power ・Set the temperature ・Take a strand of hair you want to add volume to ・Lift the hair strand and hold the brush against the roots from the inside for a few seconds ・Slowly pull the brush towards the ends of the hair ・Press and hold the power button for about 2 seconds to turn it off *Please use on dry hair. Move the brush slowly and pass it thoroughly to the roots. *If the lock function is on, the power will not turn on. Be sure to slide the lock button up to turn off the lock function before pressing the power button (see instruction manual P.11). *When the battery level is low, a "beep beep" sound will be heard during use, and the temperature/charge level indicator lamp will flash red. Please charge it before use. It is in a condition close to unused, but the box is damaged. The back cover of the instruction manual is missing.