The good news is winter, the bad news is shorter days. Use the EL-300 to provide visibilty to objects and yourself- in both steady mode and attention-grabbing flasher. The OptiCube Lens Technology increases visible light with a faceted focusing lens. Quick release clamp mounts easily and makes removal a snap. With 5 white LEDs and OptiCube lens and reflector, the HL-EL300 puts out more than 400 candlepower of even, white light. On 4 AA batteries it produces 110 hours of run time on constant mode and 220 hours on flashing mode. The first LED bicycle/sled headlight to receive both German and British standard approvals. Features Opticube lens technology 5 white LEDs Over 30 hours run time Tool-free bracket Specifications Battery: 4 x AA (batteries not included) 400+ candlepower Usually ships within 2 business days.