The Topeak TailLux 100 USB (Red/Yellow) is a powerful dual-color rear light engineered for maximum visibility and reliability. Equipped with nine ultra-bright LEDs producing a 100-lumen spot/flood beam, it ensures you’re seen from any angle during day or night rides. Featuring four lighting modes—Constant (3 hrs), Blinking (30 hrs), Blinking + Constant (5 hrs), and Constant + Blink Sequence (10 hrs)—this compact light adapts to all conditions and ride durations. The USB Type-C rechargeable 3.7V 700mAh Li-Ion battery fully charges in 3–4 hours, providing long-lasting illumination. The bi-directional silicone strap allows tool-free attachment to aero or round seatposts (25.4–34.9 mm), seatstays, Topeak bags, or helmets, while its IPX6 waterproof polymer body ensures dependable performance in heavy rain or dirt. Lightweight, durable, and safety-focused, the TailLux 100 USB combines high visibility with Topeak’s signature engineering for commuters and performance cyclists alike.