The Lars Rover Power 850 is a USB rechargeable headlight with a powerful lithium-ion battery and a darkness destroying CREE LED bulb. Equipped with a power meter on board, so you can see just how much charge you've got, the Lars Rover Power 850 will never leave you in the dark. 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. Supported by the Mission Control III mounting bracket the Lars Rover Power 850 will never come loose or bounce about on rough terrain.