BikeSpark Auto-Sensing Rear Light G4 for Cargo Carrier - 50lm Super Bright LED Bike Tail Light with Large-Area Reflector - AAA Battery – Water ResistanceIPX4-50/80mm Quick Mount

• Upgrade Your Reflector to BKS-G4 Now! - BikeSpark’s Auto-Sensing Rear Lights detect bike deceleration with an innovative deceleration sensing algorithm, <strong>Vsenx (US Patent No.: 10427594 B2)<strong>. Once deceleration is detected, BikeSpark increases the brightness to ultra bright for 2.5 seconds, alerting and improving the reaction time of the person in any vehicle traveling behind.
• Automatic ON/OFF - Press and Hold the Control Button until the Light is On and you are good to go. Never have to remember to turn off your rear light again! BikeSpark turns off automatically after 1 minute of inactivity, and turns on when motion is detected. The perfect balance of convenience, battery life and riding safety.
• Great Brightness meeting Regulatory Compliance - Super bright SMD LEDs provide excellent visibility, up to 50 lm with low power consumption. Besides, two constantly-on lighting modes meet ISO 6742 1/3/5, and Germany StVZO Regulations help you riding safely in the darkest nights.
• Highly Reflective Reflector Meeting Regulatory Compliance : BikeSpark BKS-G4 equips with the world-class vehicle reflector. The highly reflective reflector not only meets German and EU compliance but also provides up to 30% more than required reflective brightness.
• Made in Taiwan / Quick Mounting / 3 Lighting Modes / Daytime Brake Warning / IPX4 Water Resistance / Low Battery Indicator / Upgrade Your Reflector to BKS-G4 Now!

More than a rear light and more than a reflector. BikeSpark BKS-G4 Auto-sensing Rear Light for cargo carrier meets ISO 6742, StVZO K, and the reflector meets StVZO Z/ECE/E mark. It offers a perfect balance of self-illuminating source from LEDs and reflective light with the reflector. And yes, it equips with BikeSpark well-known motion-sensing technology that triggers brake warning light promptly and turns the light on and off automatically. In addition to the compliance and the marked sensing technology, BKS-G4 provides a unique lighting mode of Daytime Brake Warning among three lighting options. It could directly work as a regular rear reflector while providing brake warning light in deceleration, reminding people in behind. With Daytime Brake Warning mode, BKS-G4 enhances the rider's safety with optimal visibility in the most efficient way. Features - Motion Sensor Warning Brake Light - Automatic ON/OFF - 3 Lighting Modes and Runtime Daytime Brake Warning: Up to three months Lighting& Brake Warning: More than 39HRs Extended Lighting& Brake Warning: 30HRs Motion Sensing Deceleration Flash - BikeSpark’s Auto-Sensing Rear Lights detect bike deceleration with an innovative deceleration sensing algorithm, Vsenx. Once deceleration is detected, BikeSpark increases the brightness to ultra-bright for 2.5 seconds, alerting and improving the reaction time of the person in any vehicle traveling behind. Buy with No Risk - BikeSpark offers the highest quality lights that are required to pass our rigorous standard. We back all products with a 30 DAY No Question Asked Money-Back Guarantee — GET A FULL REFUND IF YOU ARE NOT 100% SATISFIED. BikeSpark also protects our customers with One Year Limited Product Warranty. Made in Taiwan