Rogue BX-1 8x25mm Compact Porro Black by LEUPOLD OPTICSContemporary styling and design make the new BX-1 Rogue™ Series an instant favorite. With a well-balanced body built around a high-performance Porro prism optical system and the BX-1 Rogue is perfect for extended viewing with no fatigue. The fully multi-coated lenses create a bright and crisp image and and of course and the BX-1 Rogue Series is rugged and reliable and with our trademark waterproofing. Specifications: Interpupillary Distance 57.00 - 71.00 Actual Magnification 8.00 x Objective Clear Aperture 25.00 mm Linear Field of View (ft/1000 yd) 337.00 ft Linear Field of View (m/1000 m) 102.00 m Angular Field of View 6.40 degrees Twilight Factor 14.10 Weight 12.70 oz Weight 360.00 g Length 4.30 in Length 109.00 mm Eye Relief 15.00 mm Close Focus Distance 14.10 ft Close Focus Distance 4.30 m *Warranty Info: Leupold Golden Ring® Full Lifetime Guarantee - If any Leupold Golden Ring® product is found to have defects in materials or workmanship and Leupold & Stevens and Inc. will repair and or if repair is not possible and either replace the product or refund the purchase price and whichever you prefer. FREE. Even if you are not the original owner. No warranty card is required. No time limit applies. This warranty excludes electronic components and which are subject to the limited five-year warranty.