Kunming Kelongda Optical Instrument Co., Ltd.

China Manufacturer with main products: Binoculars, Telescopes, Military Binoculars, Night Vision, Outdoors Products, Spotting Scopes, Range Finder, Rifle Scopes

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High Optical Performance 20-60X85 Bird Watching Binocular

Supply Ability: 3,000 Piece/Pieces per Month
Payment Terms: L/C, D/A, T/T, Western Union
Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Yunnan in China
Packaging Details: 10 pcs per carton

Quick Details

  • Model Number: 20-60X85
  • main body weight: 1590g
  • main body length: 385mm
  • Zoom eyepiece focal weight: Zoom eyepiece focal weight
  • Zoom eyepiece focal length: 88mm
  • Minimum focusing distance: 7m


Product Code  20_60x85
Magnification 20~60X
Effcetive diameter of  objective lens 85mm
Objective lens focal length 530.04mm
Zoom eyepiece focal length 26.1mm~8.83mm
Objective lens structure(#Elements/#Groups) 3?3
Zoom eyepiece lens structure(#Elements/#Groups) 7?4
Focusing system intemai porro prism focusing with dual focusing device 
Field of View 2°~1°
Apparent Real field of View 40°~60°
 Field of View at 1000m/1000yds 35m~17.5m/105ft~52.5ft
Eye relief  19.6mm~17.8mm
Exit pupil  4.2mm~1.4mm
Twilight factor 41.2~71.4
 Minimum focusing distance              7m
Zoom eyepiece focal length 88mm
Zoom eyepiece focal weight c
main body length  385mm
main body weight 1590g

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