The Biolite 325 rechargeable headlamp delivers 325 lumens of brightness power, customizable fit, four versatile modes, and USB rechargeability so you can leave the disposable batteries behind. The moisture-wicking technical fabric of the headband is ready to handle any activity, from your morning runs to your evenings around the campfire. Since the power source is located on the front, it leaves a smooth back band, ideal for anyone looking to kick back or read with their light. It's time to try a headlamp you'll keep on your head and not around your neck.