Temperature settingPress "Menu" to select temperature, direction, / and timer in turn, press "Adjust" to set the temperature range: 150, 160, 170, 180, 190, 200. Timer settingsTimer range: 8S~18S--Long-lasting and easy to use-With this device, you can instantly turn curves into curly hair and provide 360 3D heating in all directions. Your hairstyle will be instantly fixed and your curly hair will last longer. Shape perfect curls effortlessly. Cordless restriction - The cordless curling iron with a built-in battery pack can be easily placed in a pocket or backpack. It is a suitable size (only 7.6 inches long) and can be held comfortably in your hand to attract hair faster. how to use? 1. Long press "Power On/Off" for 2 seconds to turn on the machineNote: To turn off, please press and hold "Power On/Off" for 2 seconds. 2. Press "Menu" to select temperature, direction, / and timer in turn, press "Adjust" to set temperature/direction/unit: //timer3. After setting the temperature, the appliance starts to heat up. Note: The heating symbol will flash during the heating process. When the temperature setting icon is reached, it will stop flashing and you will hear a beeping sound4. Comb to remove all tangles and divide the hair into sections no more than 0.78 inches wide5. Pass the hair part through the curling chamber and press and hold the start button to start the motor that pulls the hair into the curling chamber. 6. Release the start button when you hear the first beep. 7. After hearing the last beep, the automatic curling is completed. The number of beeps of the product corresponds to the set timer d. H. The timer set to No. 8 will emit 8 beeps.