The EOTech 516 is the ideal all purpose optic for Law Enforcement applications especially when partnered with an EOTech magnifier, This 516 HWS operates on the same CR123 lithium batteries commonly utilized by the leading gear manufacturers, When it matters most, the combination of speed, versitility and extended battery life will make you an unstoppable force, Buttons on left side of sight not in back to work specifically with magnifiers, CR123 Lithium batteries, Reticle: 65 MOA ring with a single 1 MOA dot, Raised 7mm base with knurLed cross bolt, Interfaces to 1 Picatinny MILSTD1913 rail, Color: Black, Optics: Transmission holography parallax free, Magnification: 1x, Eye Relief: Unlimited, LengthWidthHeight: 5x2, 4x2, 8 127x60, 9x71 mm, Temperature: 40 to 150 F, Waterproof: Submersible to 10 ft depth, Sealing: Fogproof internal optics, Adjustment per click: 0, 5 MOA 12 at 100 yds, Adjustment Range: 40 MOA travel, Mount: 1 Picatinny MILSTD1913 rail, Return to Zero: Repeatable to 1 MOA after remounting, HeadsUpDisplay Window:, Optical Surfaces: Antiglare coating, Window Dimensions: 1, 20 x 0, 85 30 x 23mm, Front Window Material: 18 solid glass, Rear Window Material: Shatter resistant laminate 316 thick, Field of View 100 yds: 30 yds 28m at a 4 eye relief, Electrical:, Brightness Adjustment Range: 146,000:1 brightest to lowest, Function Button Location: Left side near the rear of sight, Power Source: 2x 3, 0V Lithium 123 batteries, Battery Life: 1,100 continuous hours lithium at nominal setting 12, Brightness Settings: 20 settings with scrolling feature, Auto Battery Check Indicator: Flashing reticle upon startup, Auto Shutdown: At 8 hrs programmable to 4 hrs, SKU: TCLGR1095