
Smart Sensor Bike Brake Light 6 Modes Waterproof USB Charging Bike Seatpost LED Tail Light. Smart Sensor Technology: Detects braking instantly with depth algorithm for uphill and downhill accuracy. IPX6 Waterproof Design: Ride fearlessly in rain or sun with high-level water resistance. 6 Lighting Modes: Includes steady, breathe, slow, quick, rhythm, and ECO flash for 15-48 hours. 1-Year Warranty: Covers quality problems with support for replacement. USB Rechargeable: Equipped with 350mAh Li-ion battery for convenient charging. Dual Mode Switch: One-key switch between manual mode and intelligent sensor mode. OEM and ODM Support: Customization available from samples, designs, or full customization. Multi-Currency Payment: Accepts USD, EUR, AUD, CAD, CHF, GBP, HKD, and SGD.