The HE508T-RD X2 is a titanium, open reflex optical sight designed for pistol applications. The X2 Series pistol optics feature two improvements. First is the addition of Lock Mode from our 2018-2019 LE pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Second, the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. Additional features include a Titainium housing, Holosun’s Super LED with up to 50k hours battery life, Solar Failsafe, Multi-Reticle System, and Shake Awake.____________________FEATURES:MRS: Circle Dot; 2 MOA Dot; 32 MOA CircleUp to 50,000 Hours Battery Life (Setting 6)12 Brightness Setting: 10 DL & 2 NV CompatibleComplete Titanium HousingConvenient Tray Battery CompartmentParallax-free & Unlimited Eye Relief__________________OPTICAL DATAReticle2 MOA Dot & 32 MOA CircleLight Wavelength650nmReticle ColorRedParallax FreeYesUnlimited Eye ReliefYesMagnification1xMulti-CoatingsYes____________________SPECIFICATIONS:Power Source: Solar & BatteryBattery Type: CR1632Battery Life: (Hours)50000Brightness Setting: 10 DL&2 NVWindow Size: 0.63×0.91Dimension (in): 1.78×1.15×1.15Weight (oz): 2Housing Material: TitaniumSurface Finish: TitaniumAdjustment per Click: 1 MOAW&E Travel Range: ±50 MOAStorage Temperature: -40℃~70℃Working Temperature: -30℃~60℃Submersion: IP67Vibration: 5000G____________________IN THE BOX: T10 L Key  User Manual  CR1632 Battery  Lens Cloth