1,Compare with 500C,Advantages: size more biger,to interface modes,the latest system;2,Real-time Battery Power Show Clearly And Accurately3,Color Full LCD Display & Waterproof4, SPEED, MAX SPEED, SPEED(Real-time).5, Kilometer/Mile Distance , Time ,Speed and PAS Level IndicatorCaution: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:blackMaterial:PC+ABSSize:about 82.4 x 49.8mmPackage Contents:1 x Electric Bicycle DisplayOnly 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.