Compact, lightweight fender-mounted StVZO certified e-bike taillight with custom-programmed Alert Technology. It features four high-output emitters that provide a constant 11 lumens and then 22 lumens when deceleration is detected. Its co-molded design is constructed from durable Composite Matrix material, which provides an IPX7 waterproof rating. It comes with an integrated 130 cm (51.2 inches) cable that connects to the e-bike’s motor/battery system. Stainless steel mounting hardware is included. Compatibility: 6 – 12v input, 1.2w. Download the manual below for further installation and compatibility details. Our e-bike lights are powered by the motor of an e-bike and need to be manually installed. Proper installation may require some disassembly of the bike and motor (depending on make and model battery type) and additional wiring to connect the light to the motor. Please contact the e-bike or motor manufacturer for installation instructions. It is highly recommended to have a trained e-bike professional install your lights for you. SPECS MAX LUMENS: 22 COLORS: MANUALS: E-BIKE REAR FENDER STVZO ALERT E-Bike LED Compatibility