The Lars Rover Power 850 is a USB rechargeable headlight with a powerful lithium-ion battery and a CREE LED bulb that kicks out all the light you need. It's equipped with a battery meter on top so you can see just how much charge you've got (preventing you from getting left in the dark.) Its precision reflector provides a nice focused beam of light. The rugged alloy construction is weatherproof and strong enough to handle the abuse of an urban commute. Finally, the simple, sleek body style wonderfully complements almost any bike.