Bike Back Light, Bike Safety Lights, Smart Brake Sensor with Rechargeable LED, Bright Warning Lighting for Mountain and Road Cycling, Waterproof, 2.01 x 1.08 x 0.65 Inches

Three Lighting Modes for Maximum Visibility: This bicycle safety light features 3 adjustable steady, flashing, and pulse allowing cyclists to customize dependency visibility on road conditions and day weather.
RECHARGEABLE LED WITH LONG BATTERY LIFE - Designed with a USB rechargeable battery, this light provides extended use on a single charge, making it perfect for adventures and daily switches.
WATERPROOF AND STABLE DESIGN FOR ALL WEATHER CONDITIONS - Built with IPX6 waterproof rating, this bicycle light can be used in high quality weather and weather conditions, reliable performance and during any wrinkles.
EASY TO INSTALL & COMPATIBLE WITH ALL TYPES OF BIKE - This lightweight tail light can be quickly attached to any mountain, road, or bike, offering versatile use and quick installation without tools.