BARSKA 4-12x42 IR Ridgeline 30/30 Dual Color Riflescope Features 4-12x variable magnification with large 42mm objective lens Barska's Accu-lock system maintains pinpoint accuracy at multiple distances 3.1-inch eye relief; 10.5-3.5mm exit pupil Finger adjustable click adjustment; waterproof, fogproof, and extra-rigid shockproof construction Includes a two-inch sun shade; limited lifetime warranty