Equipped with a -screen display instrument with USB charging, the black characters on the white background are clearer under the sun. Battery indicator: Boost function: Boost gear: Speed display: Subtotal mileage/total mileage; running time; metric conversion: fault prompt Due to different batches, there may be differences in product appearance, color, and text, which will not affect the use Product model: M6H | LCD instrument that integrates electronic control parts and bicycle parts Product size: 98.1X61.9X24.6MM Adaptive voltage: 24V/36V/48V/60V Communication : UART Applicable handlebar size: 22.2MM/25.4MM/28.6MM/31.8M USB charging function: 5V/500MA Colour:black Material:ABS type:5PIN Package Contents: 1 x LCD Displa 1 x Sine Wave Controller(the appearance and color are random, 't accept the specified ) 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.