Aeon Optical Co., Inc. [China]

Detailed Product Description

Detailed Product Description:

7-21X40 zoom binocular, big eyepieces, wide view angle, fully coated, high resolution

MAGNIFICATION: 7-21X

OBJECTIVE DIAMETER (mm): 40

LENS COATING: Blue   

FIELD ANGLE: 5.3°-2.5°     

FIELD OF VIEW (at 1000m/1000yds): 92m/276ft~43m/192ft     

PRISM TYPE: BK7     

CLOSE FOCUS (m): 10  

EXIT PUPIL (mm): 5.7~1.9 

RELATIVE BRIGHTNESS (mm): 27.04~2.89     

EYE-RELIEF: 16.5~12.5