The rear light BLAZE features a brake light function that can be used even without continuous light during the day. Always visible when you need it: The integrated brightness sensor automatically turns the rear light on and off in auto mode based on the surrounding light. Up to 7 hours of illumination time and a visibility range of 500 meters. Fully rechargeable via the Micro-USB port within 3 hours. The blue indicator light shows you when the rear light needs to be charged. Flexible silicone strap allows for quick and tool-free mounting on the seatpost.