Red/Green Micro Dot Sight, Passive Collimator Reflex Sight The Micro Dot Sight is small and light suitable for hunting, sport shooting, or military applications. The Microdot sight is designed for the "two eyes open" sighting, which greatly enhance situational awareness and target acquisition speed. The parallax-free design makes the dot fixed on target while eyes moving. Features --- Durable all metal construction --- Allow for precision windage and elevation adjustments --- Red and green dot with brightness control --- Lightweight, dust-poof, weatherproof, and shockproof --- Integrated mount for standard 20mm Picatinny or Weaver rails. --- Lens covers and padded storage box included Specification ---Dimensions: 68mm x 43mm x 46mm ( L x W x H) ---Optical Axis Height: 18mm ---Body Color: Black ---Weight: 118g ( 4oz ) ---Adjustment: +/-1.