EOTech VUDI.3-18.FFP.MD2 Precision Rifle Scope 3..5-18X50 MM First Focal Plane MD2 Reticle Eye Relief: 3.5X: 91-101MM; 18X: 90-101MM Exit Pupil : 3.5X: 11.2MM; 18X: 2.8MM Field Of View: 3.5X: 29.5 FT; 18X: 5.7 FT Flat Black Type III Anodized Finish Broadband Anti-Reflective Coating (exposed optical surfaces) Windage & Elevation Increment Per Click: Approx. 0.25 MOA Battery Type: CR2032 Overall Length: 14.84″ Weight: 33.6 Ounces Tube Diameter: 34 MM Total Elevation Adjustment Range About Factory Defined Zero Reference: +/- 14.5 min MRAD or +/- 50 MOA Total Windage Adjustment Range About Factory Defined Zero Reference: +/- 14.5 min MRAD or +/- 40 MOA Auto Power Shut-Off, Typical Time Interval: 2 Hours Battery Life (at Middle Brightness): Approx 500 Hours * Controlled Under Export Administration Regulations (EAR); may not be exported without proper authorization by the U.S. Department of Commerce