A durable, rack-mounted rear light designed specifically for rear racks rather than seatposts or stays. It features a built-in reflector and long battery life, making it ideal for commuting or touring in low-light conditions. Tool-free battery access ensures easy maintenance, and the unit is compliant with a wide range of international safety standards. Suitable for any type of rear rack with 50 mm, 80 mm, or centre hole spacing.Key features:rack-specific rear light with integrated reflectorcompatible with all standard rear rackstool-free battery replacementmultiple international lighting and reflector certificationsruns on aa batteries for extended useruntime:constant mode 30hrsflashing mode 100hrsrapid mode 60hrslong-life mode 120hrspulse mode 30hrstechnologies:auto light: auto on off controlled by motion & optical light sensors to automatically turn the light on when darkness of motion is detected.Reflector: our reflector technology exceed the highest government standards around the world.Opticube : our proprietary opticube lens technology maximizes brightness for greater visibility.Side visibility: provides visibility from the side to increase safety.All weather: can be used in rainy weather.