SKY ROVER Qinyun Waterproof APO Handheld Binocular Specifications: 6x32 1. Magnification: 6x 2. Effective objective lens diameter: 32mm 3. Exit pupil diameter: 5.3mm 4. Super-flat field technology: Yes 5. Field of view: 12.2 degrees, 214m1000m 6. Viewing angle: 70 degrees 7. Interpupillary distance: 56-76mm 8. Exit pupil distance: 18mm 9. Minimum focusing distance: 1.5m 10. Prism material: High-transmittance prism (H-BaK7GT) 11. Coating: FBMC + hydrophobic film (on the front of objective lens and the back of eyepiece) 12. Prism coating: FBMC + phase coating + dielectric film 13. Transmission: 90% on the average for the entire device, and the peak can reach to 92% 14. Diopter adjustment (leftright): +- 4 dpt 15. Refractive correction: >5 dpt 16. Lens material: magnesium alloy 17. Focusing method: central focusing 18. Eye mask: Five-section rotating, fully detachable 19. Nitrogen Filling: Yes 20. Waterproof: 30 minutes at 1m water depth 21. Dimensions: about 139x120x65mm 22. Weight: 760g (excluding eye mask), 795g (including eye mask) The Differences of 8x42: 1. Magnification: 8x 2. Effective objective lens diameter: 42mm 3. Exit pupil diameter: 5.3mm 4. Field of view: 9.1 degrees, 159m1000m 5. Viewing angle: 70 degrees 6. Exit pupil distance: 18mm 7. Minimum focusing distance: 2m 8. Product dimensions: about 156x123x67mm 9. Weight: about 880g The Differences of 10x42: 1. Magnification: 10x 2. Effective objective lens diameter: 42mm 3. Exit pupil diameter: 4.2mm 4. Field of view: 7.8 degrees, 137m1000m 5. Viewing angle: 71.4 degrees 6. Exit pupil distance: 18mm 7. Minimum focusing distance: 2m 8. Product dimensions: about 156x123x67mm 9. Weight: about 890g The Differences of 10x50: 1. Magnification: 10x 2. Effective objective lens diameter: 50mm 3. Exit pupil diameter: 5mm 4. Field of view: 7.5 degrees, 131m1000m 5. Viewing angle: 70 degrees 6. Exit pupil