"The Athlon Optics Midas EDC Red Dot Sight is specifically designed for today's subcompact everyday carry firearms. For those looking for an extra-duty aluminum housing, this is it. With 50,000 hours of battery life on medium setting, the Midas from Athlon Optics is always ready. Thanks to its fully multi-coated optics, this sight effectively reduces reflected light and increases the transmission of light giving you a brighter image than normal single-coated lenses. A built-in motion detector automatically wakes the Midas EDC site from the sleep mode when a motion is detected. Waterproof, fog proof, and shockproof. Its compact footprint is ideally suited for the SIG SAUER P365, Springfield Hellcat, GLOCK 43 MOS, and many others using the RMSc footprint standard. Runs on a CR2032 battery. 1X magnification. 3 MOA dot size. Length: 1.61"". Center height: 0.96"". Weight: 0.36 oz. Designed for today's subcompact carry firearms 50,000 hours of battery life on medium setting Fully multi-coated for bright imagery Waterproof, fog proof, and shockproof"