The BBB Signal Brake Rear Light is a high-performance safety accessory for cyclists, offering a powerful 50-lumen output that activates during braking for enhanced visibility. It includes an automatic standby mode to conserve battery life when stationary for three minutes. The safety mode extends runtime by at least four hours, and the memory mode allows easy return to the last used setting. Its versatile strap mount fits various seatpost sizes, and the self-locking USB port ensures waterproof reliability in all weather conditions. SKU: BBB BLS-167.