Description Tested and recommended by the National Tactical officers Association, the Sightmark® .40 S&W Boresight Offers a quick and easy way to sight in your .40 Smith & Wesson pistol. The boresight can be used as a training aid for "quick draw" drills. Includes a carrying case, three (3) AG3 batteries and instructions. Included in Package Battery pack Carrying case Batteries Used Type: AG5/AG3 Quantity: 2/3 Product Downloads Product Manual Product Specifications Features Precision Accuracy Reliable And Durable Fastest Gun Zeroing And Sighting System Reduce Wasted Cartridges And Shells Compact And Lightweight Easy To Pack And Travel Comes With A Carrying Case EXPORT CONTROL NOTICE: This product is controlled for export and in-country transfer under the Export Administration Regulations (EAR). division contrary to U.S. law prohibited. Specifications Laser Wavelength, nm 632-650 LED Type Visible red laser Power <1 Battery Type AG5 2 or AG3 3 Battery life, hours 1 Range for Sighting 15-100 Dot Size, in. @ 100yds 2 On/Off Operation On/Off end cap Construction Brass Operating Temperature -10 - 50