Features1This bicycle warning taillight has a variety of wearing methods and high brightness, which reminds the car behind to keep an effective distance to ensure safety. 2The bright LED lamp beads, the red light effect is soft and not dazzling, the transparent red shell is used to break the traditional color shell, the floodlight range is wide, and the night riding is safer. 36 light modes, click to switch gears. Clips and silicone straps can be used not only for bicycles, but also for backpacks, tail bags, and helmets. 4Built in 500mAh lithium battery, USB charging, multiple charging methods, convenient and fast, compact and portable, long battery life and rest assured riding. 5Waterproof, worry free riding, buttons and charging ports are made of silicone, no fear of wind and rain, riding as usual on rainy days. (Do not soak in water)SpecificationItem Type:BikeRearLightMaterial: ABS, PC, SiliconeProduct Size: Approx. 60x29x26mm / 2.4x1.1x1.0inBattery: 500mAh Polymer Lithium Battery (Built in Battery Shipped)Charging: USB ChargingLamp Beads: 24 Red LEDsWaterproof: Life Waterproof6 Lighting Modes: Always On, Slow Flashing, Fast Flashing, Breathing Light Mode, Horse Racing Mode, Side Flashing ModePackage List1 x Taillight1 x Clip1 x Silicone Strap1 x USB Charging Cable