20-60x80 birding binoculars,birding binoculars in china

The model of 20-60x80 birding binoculars has a lear image and aluminum trunk，easy to carry, ideal for outdoor uses. Appliable to various fields including game watching, wildlife observation, hiking,scenery watching, shooting practice and so on. 

20-60x80 birding binoculars Composition：aluminum trunk，tripod，nylon backpack, camera tripod(optional)

Aluminum trunk durable 20-60x80 birding binoculars Specification:
MODELS SPEC.        20-60x80        
MAGNIFICATION        20x    60x    
OBJ.LENS DIA.    mm    80mm    
TYPE OF PRISM    Type / Material    Porro/BK7    
PRISM COATING    Yes / No    No    
NUMBER OF LENS    Pieces & Groups    7pieces4groups    
LENS COATING    CL/FC/BMC/FBMC    BMC    
FOCUS SYSTEM    Cent. / Ind. / Fix    Cent.    
FOCUSING LENS    Eye. / Obj. / Int.    Int.    
EXIT PUPIL DIAMETER    mm    4    1.33    
EXIT PUPIL DIST.    mm    18    15    
FIELD OF VIEW    ANGLE    1.8°    1.0°    
    Ft / 1,000Yds    94.2 ft    52.5ft    
    M / 1,000M    31.4m    17.5m    
MIN.FOCAL LENGTH    M / Ft.    6m/18ft    
RELATIVE BRIGHTNESS        16    1.77    
TWLIGHT INDEX        40    69.3    
RESOLUTION        ≤2.8"    
DIOPTER COMP.    ±Optic.Degree    
INTERPUPILLARY DIST.    mm    
WEATHER PROOF    Yes / No    Yes
WATER PROOF    Depth / Time    1.5m/3min
NITROGEN FILLED    Yes / No    Yes
EYECUPS SYSTEM    Rubber / Pop-up / Twist-u    Twist-up
POUCH    Yes / No-Mat'l.    Yes
STRAP    Yes / No-Mat'l.    No
CLEANING CLOTH    Yes / No    Yes
SILICA GEL    Yes / No    Yes
UNIT DIAMENSION    mm    430x90x165
UNIT WEIGHT    gm / oz.    1,230g
GIFT BOX SIZE    mm    450x115x170mm
PIECES PER SHIPPING CAR    Pieces     6pcs/ctn    
SHIPPING CARTON SIZE    Size  46.5x38x37.5cm