Features: 1.Enhanced Safety: The Bicycle Mountain Bike Brake Light ensures maximum visibility and safety during night rides. Its rear bike lamp emits a powerful safety warning light alerting motorists and pedestrians to your presence on the road. 2.Convenient Battery Operation: This Safety Warning Cycling Brake Light operates on batteries eliminating the need for complicated wiring or external power sources. Simply install the batteries and you're ready to go. 3.Super Bright Illumination: With its high luminance design this Battery Operated Warning Bicycle Light provides exceptional brightness ensuring that your brake light is visible even in low-light conditions. Experience peace of mind knowing that your bike's brake light works brilliantly enhancing your safety on the road. 4.Versatile and Easy to Install: This bicycle brake light is suitable for a wide range of road bikes and bicycles. It can be easily installed using the included mounting accessories making it a convenient addition to your bike's accessories. 5.Perfect Gift for Cycling Enthusiasts: This Bicycle Parts Accessory is an ideal gift for cycling enthusiasts. Its practicality safety features and sleek design make it a thoughtful present for anyone who loves cycling and values their safety on the road. Specification: Material: Plastic Battery: 1 * Button Battery Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. includes: 1 * Bike Brake Light