Exway's Remote Controller's are Bluetooth connected between the remote and your board. 

The replacement Remote is compatible with most Exway V2 models of Electric Skateboard including the X1, Wave, Ripple, Flex, Atlas Carbon (not Atlas Pro).

Size 120 x 51 x 19.5mm
Battery Parameters 350mAh
Signal Code 2.4GHz
Charging Input 5V~1A