1,Compare with 500C,Advantages: size more biger,to interface modes,the latest system; 2,Real-time Battery Power Show Clearly And Accurately 3,Color Full LCD Display & Waterproof 4, SPEED, MAX SPEED, SPEED(Real-time). 5, Kilometer/Mile Distance , Time ,Speed and PAS Level Indicator Caution: Do not plug in or unplug this display when the power to the unit is on. Avoid collisions. Protect the display's membrane to water resistant performance. Installation: Install the display and button control on the handlebar and adjust location. Plug it into the controller with power off. Colour:black Material:PC+ABS Size:about 82.4 x 49.8mm Package Contents: 1 x Electric Bicycle Display 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.