The LaserMax Guide Rod Battery Pack is designed to enhance the performance of your LaserMax Guide Rod Laser sight specifically for Glock Sig Sauer and Smith & Wesson models. This battery pack features a 1.55-volt silver oxide chemical composition providing a reliable and consistent power source. With a rated capacity of 20 mAh these lightweight button cell batteries deliver exceptional performance across a wide range of temperatures ensuring your laser sight operates flawlessly. The LMS-393 size is sleeved for easy and trouble-free installation. While these batteries are not rechargeable they boast a 5-year shelf life making them a dependable choice for your laser sight needs. Ensure optimal performance by replacing your batteries at least once a year and consult the LaserMax Operators Manual or Battery Compatibility Chart for correct part selection. This single-pack battery offers the assurance of quality and longevity for your laser sight applications.