V-shaped comb: Material: plastic comb Style: Electric Comb General voltage: 110-240V, Frequency: 50 / 60Hz~ Power: 42W PTC heater Power cord length: about 2 meters, 360 degree rotation. 1. Turn on the machine in the heating state, and turn off the machine automatically 30 minutes later. 2. Heating time: it takes 3 minutes to reach the maximum temperature of 220c. 3. Press the on / off button for 2 seconds to close this item. All LED lights are off. 4. Press the on / off button for 1 second to ""start up"". Red light and blue light are on. By default, the low-level blue light (150C / 302F) will flash after 3S, and the machine will start to heat up. When the temperature reaches 150C / 302F, the lamp stops flashing and the two lamps are on. Press the on / off button once more, set the higher temperature 180C / 356f, and the three lights will be on when it flashes to the required temperature. Press the on / off button again, set 220c / 428f, and four lights will be on."