Pentax UP 10x25 U-Series UP Compact BinocularsPentax's highly portable and functional 10x25 U Series UP Compact Binoculars employ an innovative unibody design that locks the objective lenses into the body with the eyepieces set on a synchronized dual axis mechanism that ensures they stay symmetrical in relation to the center axis of the optic when adjusting the interpupillary distance. The 25mm objective lenses are fully multicoated to reduce reflection and maximize light transmission to produce