Magnification: 18-36x - Objective: 50mm - Prism Glass: BaK-4 - RainGuard HD: No - Field Of View: ft@1000 ft. 115/38@18x - Exit Pupil: mm 2.8@18x - Close Focus: 20' - Weight: 31 oz - Length: 14.7 - Waterproof/Fogproof: Yes - Other Eye Pieces Available: No - Eye Relief: 16mm - Color: Black - Full-size brightness and clarity in a streamlined package. One made to easily travel with you wherever you take it from single-day trips to week long adventures all at a valuable price. - The 18-36x 50mm porro-prisms offer versatile magnification ranges for any application while the multi-coated optics deliver awesome visual command during dawn and dusk. With waterproof fogproof housing every model is built for the long haul.