Lezyne's Super Drive 1500XXL is a super high-performance cycling light engineered for all types of night riding. Incredibly durable, heat-dissipating CNC machined aluminum construction. Three market-leading, ultra-high-output LEDs delivering up to 1500 lumens. Optimized Constant Lumens system maintains steady lumen output throughout battery cycle. Optional Overdrive Race Mode toggles between Overdrive and Economy modes only. Mode Memory function returns to selected mode after turning off. Enhanced MOR (Maximum Optical Reflection) lens with built-in side visibility. High-speed 2 Amp USB charging capabilities (with compatible wall adapter). Ultra rugged and pliable strap securely mounts to all standard bar shapes, including aero bars. Advanced Li-Ion battery for superior runtime.