This sight has a 30mm objective and a 2 MOA dot reticle for precision aiming. Featuring digitial push-button controls, multiple brightness settings, ultra-long battery life (CR123A included), programmable auto-off, click windage and elevation adjustments, integrated lanyard system that prevents loss of W/E caps, and an ultra-durable design, this sight is shock-resistant to 1000g and waterproof and fogproof. The laser is a powerful 650nm red laser featuring a next generation, high-efficiency semiconductor laser diode. Tru-Glow's Tru-Tec 30mm Red Dot Sight comes with an quick-detach mounting system compatible with standard Picatinny/Weaver-style rails.