1. The system uses a new Sabvoton programmable controller (sine wave design), with low noise and good heat dissipation performance 2. Our controller can be programmed through PC and Bluetooth (compatible with Android and systems), with cruise function, electronic , reverse charging function, current and voltage adjustment, error code indication, and motor pole number setting. The temperature protection settings and other functions of the motor and controller can be said to be the most powerful controller on the market Waterproof system for 32V-72V45A Sabowatton controllers Material: Plastic+metal colour: Black+silver Package Contents: 1 set Programmable controller 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.