EOTech Vudu 3.5-18x50 SFP

Tube Diameter: 34 mm Objective Diameter: 50 mm Overall Length: 15.13" (384 mm) Weight: 33.6 oz (952 g) Magnification: 3.5-18X Mount: 1” Weaver or MIL-STD-1913 rail Eye Relief: 3.5X: 3.39-4.02" (86-100 mm) 18X: 3.46-3.90" (88-99 mm) Field-of-View (@100 Yards):3.5X: 30.2 ft (9.2 m) 18X: 5.9 ft (1.8 m) Power Source: 2CR2032 Battery Life: Lithium: 2,500 continuous hours at nominal setting 12 at room temperature Operating Temperature: -40°F to 140°F (-40°C to 60°C) Made in Japan