The Lars Rover 810 is a USB-rechargeable headlight with a powerful lithium-ion battery and a darkness-destroying CREE LED bulb. Its precision reflector provides superior luminous guidance for up to 10 hours of ride time. The Lars Rover will run for an additional 15 minutes in low-power safety mode after the low-battery indicator light comes on. The rugged alloy construction is weatherproof and strong enough to handle the abuse of an urban commute. - 5 Modes: Steady low (6 hours), Steady medium (3 hours), Steady high (1.5 hours), Fast Flashing (20 hours), Pulse (7 hours) - Li-ion battery, CREE LED, Texas Instruments integrated circuit - Weatherproof exterior for all-season riding - One second delayed power switch to prevent accidental on/off - Light wakes up in last mode used - Micro USB charging cord included; 5.5-hour charging cycle - Includes UV-proof quick on/off handlebar mount