Product Name: H8 Cycling Speed Odometer Dimensions: 145.7mm x 83.3mm x 11.3mm Functions: Battery indicator; headlight control; boost function; assist levels; speed display; trip/total mileage; running time; metric/imperial conversion; fault indicator; walking; PAS levels; speed; riding time; error warning Communication Method: UART Compatible Handlebar Sizes:22.2mm,25.4mm,28.6mm,31.8mm Compatible Voltage: 24V/36V/48V/60V Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Specifications: B:Waterproof round port 5PIN Color: Black Material: plastic+metal Package Contents: 1 * LCD Display 1 * 36V 350W Sine Wave Controller(Random colors and appearance and cannot be 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.