The rugged and reliable ATIBAL STRIIKER Red Dot features 50,000 hours of battery life, a 2 MOA dot for precision accuracy, a highly efficient LED emitter for maximum battery life, and a multi-height mounting system for that exact right height no matter the application. The STRIIKER Red Dot runs off of 1x CR2032 battery, has 11 brightness settings, a 6 hour auto-shutoff, and is water proof up to 3 meters. The STRIIKER Red Dot, is a compact, lightweight, and rugged reflex sight utilized for quick target acquisition. The STRIIKER Red Dot is designed for two eyes open, which greatly improves target acquisition speed and situational awareness. It's parallax free design allows for unlimited eye relief.