[LED Lights for Safety]: The bike light is ideal for various conditions including low-light environments, road cycling, or mountain biking. Featuring high-power LED lights with 4 brightness modes, it illuminates the road and enhances visibility to others. The two warm yellow lights improve road visibility, especially at intersections. [Waterproof Odometer with Horn]: Waterproof bike computer tracks average speed, maximum speed, current speed in km/h, trip time, calories burned, odometer, and single trip distance. Includes a magnetic sensor for accurate speed measurement. The backlit LCD display ensures clear visibility in all lighting conditions. [4-in-1 Bike Computer]: Combines a speedometer, odometer, 5-mode headlight (450 lumens), and 5-mode bike horn (120dB). Includes an additional 5-mode tail light. The integrated design helps keep handlebars clean and uncluttered. Color: Black-Red Material: Plastic Size: 11.9 x 5.8 x 9 cm Package Contents: 1 x Bike Headlight 1 x USB Cable Note: Light reflection and display differences may cause slight variations in color compared to the actual item. Measurement may vary by +/- 1-3 cm.