Product Video 100LM USB Rechargeable Mountain Bike Taillight Waterproof High Brightness Bicycle Night Ridding Running Safety Warning Rear Lamp Cycling AccessoriesFeature:1. Novelty in shape: This product is novel in shape, full of fashion trends and technology.2. High-bright lamp beads: 1 3W super bright high-power red SMD lamp, with crystal-level spotlight cover, light visible distance, up to 50-200 meters at night, even in the daytime is also shiny and shiny, while the passive visual angle of 180 °, fully protect your riding safety.3. Super waterproof: the key switch and USB charging interface is covered with expanding rubber, safe riding in the rain.4. Three levels of light: press the switch to shift: high light - low light - flashing - off, to meet the needs of the riding function.5. Super power saving: high light 100Lumen life time up to 3h, low light 20Lumen life time up to 6h, flashing life time up to 8h.6. USB interface charging: using the world's most popular lithium-ion polymer battery (3.7V, 800MAH), can be reciprocally charged and discharged, fast charging speed, long discharge time, general charging 2-4 hours, discharge time of about 3 -8 hours.7. Self-charging indicator light. When charging, the red indicator light is on - indicating that it is charging. Green indicator light - indicates that charging is complete.8. Adjustable thickness of the silicone strap design: quick and easy to install, suitable for 22-32mm seat tube.9. Professional horizontal and vertical base design: horizontal and vertical installation at will.10. Adjustable tail light angle: tail light base can adjust the angle.11. Multiple protection: built-in over-discharge protection circuit, automatic power off when the battery is low, to protect the battery, after the lack of power, please charge in time12. Solid locking: tail light holder with locking function, firmly lock the tail light to prevent falling off. When you need to disassemble, you need to press the latch switch of the taillight holder while pulling out the taillight.Specification:Name: USB rechargeable bicycle tail lightSize: 60x40x30mm/2.36*1.57*1.18inNet weight: 73g (including USB cable and taillight holder)Material: ABSColor: black + redPackaging: color boxLED:LED: 1 x high brightness red LED chipService life: 5000 hoursGear: 3 gears, high brightness - low brightness - flashingBrightness: 100LMPower: 3WBattery:Current: DCBattery: 3.7V, 800mAh polymer batteryWorking time: 3-8 hoursCharging time: 2-4 hoursWhether rechargeable: YesCharging method: micro USB chargingOther:Charging indication: red light when charging, automatic shutdown when fully chargedSwitch: press typeWaterproof rating: IPX4 (daily waterproof, do not immerse in water)Applicable tube diameter: 22-32mmCertification: CENote:There will be some deviation in weight.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color shown on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.