The ROCKBROS Q3 Samurai is a rear bicycle tail light designed to keep you visible and safe during your rides. It features a durable build combining CNC aluminum alloy and ABS plastic, keeping the total weight between 25g and 33g so it won't weigh down your bike. To ensure you are seen from various angles, the light provides 180-degree wide-angle visibility and offers four distinct lighting modes, including steady, breathing, fast flash, and burst flash. Smart sensors make the light more intuitive to use, with a light sensor that handles automatic on/off functions in low-light conditions and a vibration sensor for added responsiveness. When you slow down, the integrated brake sensor automatically increases the brightness to alert drivers behind you. The device is powered by a 300mAh Li-Polymer battery that lasts between 12 and 30 hours depending on the selected mode, and it recharges easily via a USB Type-C port. Designed for all-weather use, the NX-00002101 carries an IPX6 waterproof and dustproof rating, meaning you can ride through rain without worrying about the electronics. Installation is straightforward thanks to a tool-free quick-lock system that allows you to attach the black light securely to either your seat post or seat rail.