Opticron Savanna R PC 10x33mm Roof Prism Binocular Non-Slip Rubber Covering Black. The overriding feel is "slimline-compact" while the dual hinge assembly provides plenty of room for fingers of all sizes. Images are bright and clear and the optical system delivers a favourable 6.1deg. field of view so locating and tracking objects is achieved with the minimum of fuss. Like their sister models the Savanna R PC 10x33 closes in to just 52mm making them suitable for aged 7 and over. Specifications for Opticron Savanna R PC 10x33mm Binocular: Manufacturer: Opticron Color: Black Magnification: 10 x Objective Lens Diameter: 33 mm Prism System: Roof Prism Material: BAK4 Image Stabilizer: No Eye Relief: 17 mm Exit Pupil: 3.3 mm Field of View Linear: 318 ft at 1000 yds Field of View Angle: 6.1 degrees Optical Coating: Fully Multi-Coated Binoculars Focus System: Center Focus Twilight Factor: 18.2 Interpupillary Distance: 2 - 3 in Close Focus: 3.5 m Weather Resistance: Yes Water Resistance Level: Waterproof Length: 5.1 in Weight: 415 g Finish: Non-Slip Rubber Covering Fabric/Material: Polycarbonate Aluminum Alloy Package Type: Box Included Accessories: Rainguard Rubber Objective Lens Covers Neoprene strap Soft Case Magnification Type: Fixed Size: 129x120x47 mm Features of Savanna R PC 10x33mm Roof Prism Binocular: Compact roof prism optical design finished in textured rubber armour Nitrogen waterproof construction PC Phase corrected prisms for extra clarity Fully multi-coated optical system Lightweight polycarbonate & alloy body IPD to 52mm for children 7 years and over Long eye relief for spectacle wearers 3-stage twist type retractable eyecups Close focus to 3.5m Supplied in a soft case with rainguard neoprene strap and rubber objective lens covers Package Contents: Opticron Savanna R PC 10x33mm Binocular Opticron 30739: Savanna R PC 10x33mm Roof Prism Binocular Black 10x33