Bike Helmet Warning Tail Light USB

20 Lumens High Brightness: Provides a powerful light source, ensuring visibility and safety during night rides.

9 Modes to Switch at Will: Multiple lighting modes to meet different environments and needs, easily adapting to various cycling situations.

Lightweight and Durable: Made from ABS+PC material, it's both lightweight and durable, suitable for long-term use.

Small and Portable, One-Handed Operation: Compact design for easy portability and one-handed operation, making it convenient to use.

USB Charging with 220mAh Battery: Built-in 220mAh battery, rechargeable via USB, offering long-lasting power and easy use.