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 Product model:M6H LCD instrument that integrates electronic control parts and bicycle parts Adaptive voltage:24V/36V/48V/60V Product shell:ABS and metal parts Communication :UART USB charging function:5V/500MA Due to different batches, there may be differences in product appearance, color, and text, which will not affect the use Colour:Black Material:ABS Size:98.1x61.9x24.6MM,Applicable handlebar size:22.2MM/25.4MM/28.6MM/31.8MM Package Contents: 1 * LCD Display 1 * Sine Wave Controller(The color and appearance are random, no designation is accepted) 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.