Now running on our new modular BD 1800 rechargeable battery, the Black Diamond ReVolt350 Headlamp is a powerful, versatile and rechargeable headlamp that has now been fully redesigned. Now producing 350 lumens of light, we’ve also updated the user interface by adding a second switch for easy lens mode selection. In addition, the improved optical efficiency provides brighter light with more peak intensity, and you can track the battery life with a six-setting, three-LED battery meter