Thicker aluminum alloy shell is good for heat dissipationSuper waterproof interface design, safer to useThe left-mounted resistance boost sensor does not support ball/press into the market and hollow one-piece shaft.Power: 250WVoltage: 36Vtype: 12AColour:silverMaterial:Aluminum alloyPackage Contents:1 x Electric bicycle controllerNote: This controller needs to be adapted to Bafang displayOnly the above package content, other products are not included.Note: Light shooting 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.