The YL80C meter provides a of functions to meet your riding needs. Battery display Motor power indication Assistance gear adjustment and indication Speed display (including real-time speed, maximum speed, average speed) Mileage display (including single mileage and total mileage) Helping to implement control and instructions Headlight control and display Error code display USB connection Personalized parameter settings (such as: wheel diameter, speed limit, battery power setting and power assist parameter setting, power-on password setting, controller current limiting setting, etc.) Default parameter recovery function Special Features: For Ebike color:Black Material:plastic size:95 x 58.5mm Package Contents: 1 x Ebike Display Meter 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.