1EASY TO INSTALL: This bike horn headlight is easy to install, just connect the yellow wire to the horn, the blue wire to the light, and the black wire to the negative terminal. 2MATERIAL: Made of aluminum alloy, not easy to rust, wear proof, can be used for a long time. Fine workmanship, fashionable style, and good heat dissipation. 3VOLTAGE RANGE: Suitable for electric bikes with a voltage range of 1272V, it can adapt to different vehicle power systems, you can rest assured that it will be installed and used. 4WATERPROOF: With good waterproof performance, it can work normally in wet or rainy environment. Whether you are riding outdoors or in bad weather conditions, it can maintain the normal brightness and function of the light. 5ENHANCED RIDING SAFETY: The design and function of cycling horn headlamp is designed to enhance cycling safety. Through the combination of horn and light, it can alert other vehicles and pedestrians to notice the cyclist, ensuring a safer and more reliable ride. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.