Smith & Wesson Accessories Solstar Smart Light Headlamp with Distance Seeking Sensors Distance seeking sensors for automatic brightness adjustment Lumens: 185-20 White Runtime: 3 hours Hi / 30 hours Low with white LED Features High, Low, Auto and Manual Adjustment Modes 3 AAA Batteries and Headstrap Included Distance seeking sensors for automatic brightness adjustment Lumens: 185-20 White Runtime: 3h Hi/30h Low (W)