1.For handlebar size:22mm 2.Product size:L54*W27*H54MM 3.Waterproof:IP65 4.Function:Control the on/off of the headlight horn and electric bicycle lights, and the left and right steering functions of the taillights. 5.Cable length:1.5 m 6.Wires:White is the negative pole, red is the positive pole, purple is the headlight and taillight, black is the horn, green is the right turn, and ocher is the left turn. 7.The maximum working voltage is 48V, and the maximum working current is 1A.