Bold button backlight design. Even at night, button functions can be clearly distinguished. Power indicator; Headlight control; Boost function; Boost gear and speed display; Subtotal mileage/total mileage, running time, metric to English conversion, fault prompt Adapted voltage: 24V/36V/48V/60V Applicable handlebar size: 22.2MM Different batches may cause differences in product appearance, text, and color, which will not affect the use Colour:black Material:plastic Package Contents: 1 x Dashboard Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.