Features1High Brightness: The bike tail light features super bright LED beads, ensuring a high level of brightness that stands out during nighttime rides, making you highly visible to motorists and pedestrians alike. 25 Modes: With 5 different lighting modes including steady red, flashing red, steady blue, flashing blue, and alternating red and blue flashing lights, the bike tail light allows you to choose the mode that best suits your needs. 3Outstanding Battery Life: Equipped with a high capacity 500mAh battery, the bike rear light guarantees not only brightness but also extended battery life, enjoy up to 4 hours of continuous illumination. 4Versatile Mounting: The bike tail light comes with a secure fixing strap, allowing you to easily mount it on various positions of your bike. Additionally, you can adjust the light's angle to achieve the optimal illumination angle, meeting your specific requirements and ensuring maximum visibility. 5Convenient USB Rechargeable: Designed with USB charging, this LED bike tail light can easily meet your daily cycling charging needs, saving your time and effort.SpecificationItem Type: Bike Tail LightMaterial: ABSWeight: Approx. 45g/1.6ozProduct Size: Approx. 87x20x30mm/3.43x0.79x1.18inBattery: Lithium battery 500mAh (shipped with built in battery)Modes: Red on, red flashing, blue on, blue flashing, red and blue alternating flashingLongest Battery Life: About 4 hoursPackage List1 xBike Tail Light1 xFixingStrap1 x Charging Cable1 x User Manual