Pentax UP 10x25 WP BinocularsThe Pentax UP 10x25 WP is a waterproof, compact reverse porro binocular with a unibody design that locks the objective lenses into the body to keep interpupillary distance symmetrical. The 25mm lenses are fully multi coated to reduce glare while maximizing light transmission for a brighter image. Also with the 6. 2' close focus these are great binoculars for near and far observation! The aspherical lens elements virtually eliminate distortion around