Xiaomi Electric Toothbrush T302 adopts a brushless motor, the power goes directly to the brush head, which maintains strong power and reduces the vibration of the handle. The sound in the process of using is the sound of the motor in the process of vibration of the movement, and the sound of the toothbrush is below 46 decibels (noise in accordance with the national standard GB/T4214.1 method of testing, the test distance of 1m for testing) does not affect the normal use.