Wireless remote control, you can turn on the corresponding lights according to the road conditions, easy to operate. Five light modes, easy to use, no complicated operations, suitable for different driving occasions. Taillight and remote control only, other accessories demo in the picture are not included. 180 degree lighting, high brightness, safer driving. 120 decibel tweeter, passerby reminder, safe night driving. USB fast charging, with silicone seal, good waterproof and dustproof effect. Adjustable angle, waterproof life level. 14 red light SMD and 18 yellow light SMD on the left and right sides have high brightness, which can effectively remind the traffic behind. Battery capacity: 900mAh lithium battery Charging time: 3 hours Voltage: 3.7 V. Material: ABS. Size: approx. 3.7 x 1.3 x 1 in. Color: black. Power supply: USB rechargeable Package content: 1 x Bicycle Tail Light 1 x Remote control