Chinese Binoculars
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45-degree BT 80 follows basically the design of BT100 45 degree: its 1.25" non-proprietary focuser accepts all industry standard 1.25" eyepieces.  It uses a doublet objective design, but by using the best optical materials and the latest machine tools for the glass grinding, it has excellent optical performance. Due to its much lighter weight than BT100 45 degree, BT80 45 has more mobility and is easier for a quick set-up.

45-degree BT 80 comes with a wooden tripod or alum tripod, the fork mount or the normal mount, a pair of factory 20x eyepieces and a carrying case.  The optional accessories include the 7x50 finderscope.


Objective size 80mm
Ocular 45 degree 1.25" non-proprietary helical focuser
standard factory eyepiece 20x eyepieces
Body covering & color  painted, silver or champagne finish 

Overall dimension

Prism BAK4
Optic coating Broadband fully multi-coated
Field of view at 1000m 20x-2.24 deg.
Exit pupil diameter 20x-4mm  
Exit pupil distance 20x-19mm  
Resolution 3"
Focal length 552mm
Inter-pupil distance 56-74mm
Finderscope 7x50, optional
Net weight of body   6.8 kgs
Fork Mount
Horizontal azimuth angle 360 degree
Elevation angle  90 degree
Depression angle 15 degree
Normal Mount
Horizontal azimuth angle 360 degree
Elevation angle 57 degree
Depression angle 30 degree




Other super-giant binoculars models available are: 25/40x100 painted25/40x100 standard, 25/40x100 coin-op, BT100 45 and 25x100 FB.

We don't retail. We only sell to the dealers and wholesalers.

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Kunming Optical Instruments Co., Ltd.
Add:Rm. 603, Bldg. No.2, Bai Ma Gao Ceng,
No. 285, Dan Xia Rd.,
Kunming, Yunnan, China. Zip Code: 650118
Tel: +86-871-5411184 Fax: +86-871-5411040 Email:
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