How to switch beep? (Only switch Chinese and English) 1.Press the power button to turn it on, you will hear noisy electronic sounds. And Chinese 2.Waiting for the sound to calm down, Double click on that button(If you don't hear the "ding" sound, you can continue to double-click until you hear “ding”) 3.When you hear "ding", please press the power button, then someone will speak English