Opticron Oregon 4 LE WP 10x25mm Compact Roof Prism Binocular Non-Slip Rubber Covering Black. They are an excellent travel companion suitable for casual wildlife and general observation. Specifications for Opticron Oregon 4 LE WP Compact 10x25mm Roof Prism Binocular: Manufacturer: Opticron Color: Black Magnification: 10 x Objective Lens Diameter: 25 mm Prism System: Roof Prism Material: BAK4 Image Stabilizer: No Eye Relief: 16 mm Exit Pupil: 2.5 mm Field of View Linear: 288 ft at 1000 yds Field of View Angle: 5.5 degrees Optical Coating: Multi-Coated Binoculars Focus System: Center Focus Twilight Factor: 15.8 Interpupillary Distance: 2.1 - 2.8 in Close Focus: 6.6 ft Weather Resistance: Yes Water Resistance Level: Waterproof Length: 4.2 in Weight: 11 oz Finish: Non-Slip Rubber Covering Fabric/Material: Polycarbonate Aluminum Alloy Package Type: Box Included Accessories: Wide Neck Strap Soft Case with Rainguard Objective Lens Caps Magnification Type: Fixed Package Contents: Opticron Oregon 4 LE WP Compact Binocular Opticron 30531: Oregon 4 LE WP 10x25 Compact Binocular Black 10x25