Introducing a unique bone-shaped, high-brightness safety light! With a wide field of view and high visibility from the road, it's helpful for cars, motorcycles, and other bicycles when riding at night. This LED safety light is designed for riding on dark roads, making it very convenient for nighttime cyclists! 【Brightness Adjustment Multi-Flash Mode: 5 Modes】 Long press to turn it ON, and simply press the switch button to switch between 5 lighting modes. High Brightness Low Brightness Fast Flash Slow Flash SOS Flash LED specifications enhance safety during nighttime riding. In case of danger, the SOS emergency mode and flashing mode can be used to signal for help from those around you. Maximum Operating Time: Approximately 6 hours for high-brightness lighting Approximately 10-15 hours for low-brightness lighting & slow flash 【USB Charging】 USB rechargeable, with a built-in lithium battery that can be recharged repeatedly, eliminating the need for battery replacement. Charging Time: 1 hour 【Waterproof Design】 IPX4 waterproof specification, with waterproof specifications applied not only to the USB charging port but also to the entire light, so you can use it with peace of mind even on rainy days. 【Easy Installation】 Easy to install and remove in seconds on the seat post or handlebar without using tools. Compatible Size: Installation diameter range is up to approximately 4.5 cm, and can be attached to bicycle handlebars, etc., within a circumference of approximately 14 cm. 【Product Specifications】 ■ Material: ABS + Aluminum Alloy ■ Weight: 25g ■ Size: 59x35x57mm ■ Package Contents Bicycle Tail Light x 1 Velcro Strap x 1 USB Cable x 1 【How to Install】 Please refer to the image. This is a simple product, so please note that there is no instruction manual. Please take a look at the profile of shop Kirimomo if you like. #Bicycle #Taillight #USBRechargeable #Waterproof #DisasterPrevention #Bicycle #SafetyLight #LEDLight #Lightweight #RoadBike #MountainBike #Outdoor #RearLight #TailLamp Power Source Used...USB Charging