• 【Smart Brake Sensing】Automatically activates high-intensity warning light for 3 seconds when decelerating, effectively alerting vehicles behind for enhanced riding safety.

• 【Intelligent Auto On/Off】Automatically turns on in low light conditions and off in bright light, with 45-second delay shutdown after stopping, providing energy-efficient convenience.

• 【6 Lighting Modes】Features constant light, breathing flash, slow flash, rhythm flash, endurance flash, and rapid flash modes to meet various riding scenarios.

• 【IP66 Waterproof Rating】Weather-resistant design withstands rain and harsh conditions, ensuring reliable performance in all weather environments.

• 【Long-Lasting Battery Life】400mAh high-capacity battery provides up to 60 hours of operation in endurance flash mode with Type-C charging and battery indicator.

• 【Universal 3-in-1 Mounting】Compatible with seat post clamp, seat tube bracket, and saddle bag strap installation methods for versatile bike compatibility.

Specifications:

• Model: WT09S Smart Version
• Dimensions: 33mm × 30mm × 33mm
• Battery Capacity: 400mAh
• Waterproof Rating: IP66
• Battery Life: 60 hours (Endurance Flash Mode)
• Charging Port: Type-C
• Lighting Modes: 6 modes