The Axis Rechargeable headlamp shares a common platform with the alkaline-powered Axis. Employing a user interface that allows direct access to any mode and ultimate flexibility through complete dimmability, this light has a surprise waiting just behind the battery door. Flip the door open to gain access to the industry-standard micro-USB port for charging. The built in battery power meter lets you know when charging is complete, and modern rechargeable battery technology means this headlamp will have a consistent output in a wide range of temperatures. Weighs 81 g. with batteries. Max Lumens 200 Max Burn Time 117 Hours Water Resistance IPX4 Power Source Lithium Ion Rechargeable Built-in The Axis Rechargeable headlamp shares a common platform with the alkaline-powered Axis Employing a user interface that allows direct access to any mode and ultimate flexibility through c Flip the door open to gain access to the industry-standard micro-USB port for charging