The Buckmasters II series offers the brightness and clarity of Nikon's fully multi-coated lenses for bright, vivid pictures and optimum light transmission from dawn to dusk. The BDC reticle's unique see-through ballistic circles offer an incredible advantage for long range shooting, and allows a normal sight picture for shorter-range shots. Generous, consistent eye relief keeps your brow safe, even with the heaviest recoiling cartridges and severe shooting angles. Positive-click reticle adjustments get you zeroed in quicker and maintain your setting, even with heavy recoil. It is nitrogen-purged and O-ring sealed for complete waterproof, fogproof and shockproof performance. If you're passionate about hunting deer, the Buckmasters II is the right choice for your next hunt. his model offers 3-9x magnification with a 40mm objective lens.