The Black Diamond Storm 500-R Headlamp is designed for a technical consumer who expects all-around performance and features out of their headlamp but still values a small size and compact package. This user has access to a power source and values the ability to go out on their mission with a fully charged battery. FeaturesRechargeable: Powered with integrated high capacity 2400 mAh Li-ion battery with micro-USB charge portRecycled elastic headband featuring comfortable next to skin Repreve fiber constructionIP67: Waterproof-Tested to operate at least 1.0 meters underwater for 30 minutes.PowerTap Technology allows instant transitioning between full and dimmed powerBrightness Memory allows you to turn the light on and off at a chosen brightness without reverting back to default settingSettings include full strength in proximity and distance modes, dimming, strobe, red, green and blue night-vision, and lock modeMultifaceted optical efficiency lens technology