UTG 4.2" ITA Red/green t-dot with QD mount, riser adaptor. Features: - built on true strength platform to offer durability and precision adjustment. completely sealed, shockproof, fogproof and rainproof - intuitive quick to acquire Red/green t-dot reticle for Swift execution of T-Zone and center mass hits with fine adjustment rheostat for variable intensity adjustment - great field of view, Unlimited eye relief, and featuring a non-reflective Emerald coated lens - optimal height to co-witness with iron sights using included riser adaptor - offset and center height adjustable, easily adapts to both the shooter and firearm - aids in intuitively acquiring targets, Enhancing shooting accuracy, speed, and overall performance - versatile towards for a wide variety of different firearms applications. Includes: - mounting base. Specifications: - magnification: 1x - tube diameter: 38 mm - objective diameter: 32.5 mm - field of view at 100 yards: 100' - eye relief: flexible - exit Pupil: 26 mm - click value At100 yards: 1/2" - length: 108 mm - weight: 7.1 oz - Parallax setting: Infinity - batteries: CR1620 3V.