Pentax Ultimate Zoom Scope Built-in battery-powered motor zoom with remote switch for ease of zooming adjustment without removing your hand from the rifle or your eye away from the eyepiece Solid 1-piece tube construction makes this scope extremely durable Waterproof and fogproof to handle the most extreme hunting conditions Nitrogen-filled to prevent any internal fogging of optical elements Fully Multi-Coated optics with PentaBright technology provides a sharp, clear image