Defender Series Accu-Guard Ruger LCP Laser Sight is proudly made in the USA and constructed from polymer and nylon, so you know that you are getting long-lasting quality. The Defender Series Ruger LCP Accu Guard Red Dot Sight uses just two .357 silver oxide batteries, which are provided for you, or one 1/3N lithium battery and lasts about two hours with a five-year shelf life. With a red beam intensity of 5mW peak, 620-670nm and a dot size of about .5 inches at 50 feet, you are sure to improve your aim, shoot straight, and hit your target. This Red Laser Sight from Defender Series features micro-electronic components that are designed by a skilled team of award-winning engineers. The N-Gage activation provides on this Defender Laser Gun Sight a large, easy-to-find, bright red activation button; simply press the button before "N-Gage-ing" the target to activate the laser. The Defender Series Accu-Guard Laser Sight for Ruger LCP is pre-sighted in at the factory at 50 feet and can be easily adjusted using the provided wrench.