Red 2 MOA Dot & 26 MOA Circle Adjustable Multi-Reticle For the RMR/407C/507C Footprints Shake Awake/Motion Deactivated Standby Up to 50,000 Hours of battery life IPX7 waterproof Drop-Proof(6', 45oz, Concrete) Side Mounted Battery Window Size - 34.5x26mm or 1.36"x1.02" Parallax Free 8 Daytime Settings/2 Night vision Settings     The BULL X PRO red dot is DROP TESTED and deemed DROP PROOF for use on pistols. While the optic has survived direct optic down drops onto solid rock on full-sized rifles (AK-47). It is conservatively rated DROP PROOF for 6' drops, optic down, on 45oz pistols, onto concrete that you might find on the street. The BULL X PRO red dot utilizes an oversized glass with a width of 33mm, delivering a significantly larger field of view. The red dot has the Click MOA system with 1MOA per click. It has a Variable Reticle Technology (VRT) 2MOA dot, 24MOA Circle, or both. For more information on our Cyelee Drop-Proof Standard please see our warranty information page on our website. Window - 34.5x26mm or 1.36"x1.02"