The HE508T-GR X2 is a hard-use open reflex sight designed for handgun applications. Features include a grade 5 titanium housing with industry standard footprint, Holosuns ultra efficient 540nm Green Super LED with up to 50k hour battery life from a 1632 battery, and a Multi-Reticle System providing 2MOA dot only, 32MOA Circle only, or Circle-Dot combination. HE508T-GR X2 also features Solar Failsafe and Shake Awake technology, and Lock Mode which, when activated, can prevent inadvertent setting changes. HE508T-GR X2 features 12 intensity settings, two of which are compatible with night vision devices. IP67 waterproof.