Our tail light is bright enough to remind the surrounding vehicles and pedestrians. And more, our high-lumens bike rear light lets you choose between 6 different lighting modes. Smart mode automatically starts and stops, making it worry-free and easy to use. High-brightness optical lens combined with softness and penetration for better warning effect. Type-C fast charging and efficient circuit ensure super long battery life. IP66 waterproof and dustproof design allows for worry-free riding even on rainy days. Built-in high-precision sensor chip accurately detects braking, providing increased safety warning for cyclists. Its versatile functionality and reliable performance make it a must-have for every cyclist. Ideal for bicycles, mountain bikes, and outdoor night riding, these multi-functional warning tail lights serve as an essential safety warning device to ensure your visibility on the road. Description: Introducing our bicycle taillight, the ultimate safety accessory for all cyclists With its built-in high-precision intelligent sensor chip, this taillight can accurately detect braking and transmit deceleration information to the rear, providing an increased safety warning. The brake sensor is highlighted for 3 seconds, ensuring maximum visibility on the road. In smart mode, our taillight will start and stop automatically, making it incredibly user-friendly and worry-free. No more hassle of turning it on or off manually Equipped with a high-brightness optical lens, this taillight offers better warning effects by combining softness and penetration. You can rely on its powerful illumination to alert other road users of your presence. Say goodbye to frequent charging Our taillight features type-c fast charging and a super long battery life. The large capacity battery, coupled with an efficient circuit, ensures that you have a reliable source of light during your rides. Worried about riding in unfavorable weather conditions? Don't be Our taillight is IP66 waterproof and dustproof, allowing you to ride with ease even on rainy days. No matter the weather, you can trust our taillight to keep you safe. Upgrade your cycling experience with our bicycle taillight. Item Name: Bicycle Taillight Material: ABS Features: High Brightness, Waterproof, Long Lasting Battery Capacity: 400mAh Waterproof Grade: IP66 Size Details: L: 3.3cm/1.3", W: 3.3cm/1.3", H: 3cm/1.18" (Approx.) Notes: 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. Package Includes: 1 x Bicycle Taillight 1 x Seat Bracket 1 x Seat Bow Bracket 1 x Strap 1 x Anti-slip Gasket 1 x Charging Cable 4 x Tie Straps