Buy your Holosun HE509T-X2 Red Dot Sights from BattleHawk Armory today! Designed for pistol applications, the new Holosun HE509T X2 features Super LED technology with an impressive 50k hours of battery life and Solar Failsafe technology that keeps you powered in the rare event of battery failure. Shake Awake technology activates the LED during periods of motionlessness and can extend battery life to up to 100K hours in some cases. These Red dot Sights are encased in durable Grade 5 titanium housing that withstands seawater all while keeping fatigue at bay. Features of the Holosun 509T x2: Solar Failsafe system Shake awake technology 50,000 hour battery life 10 daytime brightness settings, 2 night vision compatible settings Multi-reticle system: 32 MOA circle with 2 MOA dot, 32 MOA circle, 2 MOA dot