Pentax's UP line of porro prism models are available in four power strengths to suit your needs. They feature niceties such as short minimum focusing distances, comfortable rubberized shells and dioptric corrections that will not be changed accidentally. Features: BaK-4 Porro prisms Ergonomic streamlined shape Sliding eyecups Pentax's renowned Super MultiCoating process applied to all lenses 56-72mm Interpupillary adjustment range ñ4 Dioptric correction with lock mechanism What's in the Box: Pentax UP 8x25 Binocular Case Strap Two #69542 Push-On Eyepiece Caps What's in the box 1 x Binocular