Fits all popular rail modes. Bright green light marks point of impact on target Compact lightweight design for comfortable concealed carry Constant or pulsing beam modes Recharable Battery via USB-C Easy ambidextrous activation for left and right-handed users Adjustable windage and elevation Fits Picatinny / Weaver-style Glock and many other pistol rails Adjustable recoil lug for versatile positioning Battery life: 8 hours continuous 18 hours in pulse mode Operating temperature: -4AdegF (-20Adeg C) to 149AdegF (65Adeg C)