Free Express Shipping! Pentax 8-16x21 U-Series UP Binoculars (Brown) Aspherical Lens Elements, BAK4 Porro Prisms, Fully Multicoated Optics, 8-16x Optical Zoom, Angle of View Range: 5-3°, Center Focusing, Sliding Eyecups, 1/4"-20 Tripod Socket