1. ON/OFF function of power supply, it will automatically shut down after standby for 5 minutes; 2. Four-bit intelligent power display can be a true reflection of the state of battery charge to the riding distance; 3. High, middle and low gears of imitation torque boost of switch gears and gear indicator display, with gear memory function, power on can automatically recover the gear state during power off; 4 .6Km/h boost function, and the boost light is blinking during boost, it can be used by the during driving a vehicle, and the vehicle driving will be easy; 5. Under-voltage indication function, when the battery is in under-voltage, the under-voltage indicator flashes; 6.The adoption of five- line of digital communication is with a self-setting function of versatile parameters, users can adjust the settings such as motor parameters, velocity parameters, speed parameter according to different models; 7. The instrument is with good interchangeability, and different instruments can directly exchange with each other and copy the data parameters; 8. The optional power supply voltage is 24V, 36V and 48V; colour:Black Material:plastic Package Contents: 1 * Display Only the above package content, other products are not included. Note: Light 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!