【5 in 1 Cycling Set & easy to install】bike computer set, include a 800 lumens front Bike Light with Speedometer, and 120 DB Bike Bell & Red Tail Light, which enables bicycle Tracking, Lighting and Bell, One set can meet all your cycling needs.The details page has video installation instructions.Able to prompt simple and quick installation of equipment.【Bike bright & Powerful】The illumination distance of the headlamp can reach 500 ft, 4 lighting modes for you to choose, Brightness and direction can be adjusted. The bicycle headlamp is rechargeable, which is durable, and can be recharged repeatedly. It can be used for 5-8H when fully charged.【IPX7 Waterproof of Bike Light】bike odometer light set is made of high-quality ABS material, IPX7 waterproof rated. Bike front light and tail light are dustproof and waterproof, not afraid of rain. Our bicycle lights can be used in any weather conditions.【LED Bike computer &Loud horn】With real-time and accurate measurement values, bike computer can view the total distance, maximum speed, average speed, cycling time and one-way travel distance, accurately and comprehensively record your every ride, if the speed data has a problem, please contact us, we will provide a satisfactory solution within 12h. The bicycle horn can emit a warning sound up to 120 dB, and there are 6 different sounds that can be adjusted.【Wide Application】This bicycle light can be used as a regular flashlight for hiking, camping, walking, home or office power failure emergency flashlight, nighttime family/kids activities, etc. Road bicycles, mountain bikes, folding bikes, and other common bicycles are compatible with this bicycle speedometer.