The Topeak TailLux 100 USB Rear Bike Light delivers outstanding rear visibility for safety in all riding conditions. Powered by nine ultra-bright LEDs producing up to 100 lumens, it offers four versatile lighting modes—constant, blinking, and mixed sequences—to adapt to traffic and trail environments. A built-in 700 mAh lithium-ion battery recharges quickly via USB-C, while the tool-free silicone strap allows bi-directional mounting on aero or round seatposts, seatstays, Topeak bags, or helmets. Compact, waterproof, and durable, the TailLux 100 is engineered for reliable performance on every ride.