The housing is constructed of aircraft-grade aluminum to be compact lightweight and incredibly durable. At only 7.1 this scope is fog water and shock resistant. The turrets are capped and offer 0.1 MRAD adjustments. A rotary dial provides an illuminated reticle with 10 brightness settings and the CR2032 battery provides roughly 300 hours of operation. The unique design provides an integrated base that is also compatible with most aftermarket mini-ACOG mounts. For those wanting a non-magnified solution EOTECH offers two packages that include a ring mount and EFLX that can be mounted to the front tube section at 12 o’clock or 45 degree positions. – Tech Specs -Overall Length 7.1 (180.3 mm) – Weight 16.9 oz (479 g) – Magnification 4-12x – Objective Diameter 36 mm – Power Source CR2032 – Eye Relief 4x: 2.5-3.1 (65-80mm) 12x: 2.4-3.0 (61-77mm) – Field-of-View @ 100 Yards 4x: 28.5 ft (8.6m) 12x: 9.5 ft (2.9m) – Country of Origin – Made in Japan