Battery Two 3 volt lithium Lamp Halogen Material Chemical-resistant polymer. Tempered glass lens for easy cleaning. Color Black Weight (with battery) 3.7 oz. Dimensions 3.4" (L) x 1.57" (W) x 1.52" (H) Run Time 60 minutes in "dual" mode. Over 48 hours in "laser only" mode. Power 80-90 lumens Laser Range >50 meters (day) >700 meters (night) Special Features 4 position master switch (Illuminator only, visible laser only, dual, and OFF) Gun Type (with rails) For Glock. Fits Beretta 92/96; Remington and Mossberg shotguns; shotguns with extended magazines; M-16/AR-15 and MP-5 style rifles and carbines with special adaptors/mounts.