SHUNTU ED 12X50 BINOCULARS WATERPROOF BAK-4 PHASE COATED,MAGNESIUM ALLOY ,FMC DIELECTRIC BINOCULARS FOR BIRDING , ASTRONOMY,SIGH SEEING
 
A word about SHUNTU (KUNMING OPTICAL) are makers various american and european brands like Vortex,bushnell,Orion,Hawke-Uk,Viking-Uk,Athlon etc
 
 
Extra-Low Dispersion (ED) objective lenses provide high resolution, high contrast images that are virtually free of optical defects like chromatic aberration (color fringing)
Fully multi-coated optics deliver maximum light transmission through the optical path
Phase coated BaK-4 prisms produce vivid, true-to-life colors
Eyeglass friendly - generous eye relief and sturdy, twist-up eyecups with multiple stops
6.5' close focus
Tripod adaptable
Die-electric coatings
Super Multi-coatings
Adjustable Pupillary 59.5-75 mm
Dimensions 6.5" x 5.33" x 2.4"
Exit Pupil 5.0 mm
Eye Cup Twist-Up
Eye Relief 17 mm
Field of View 273 ft./1000 yds.
Focus Adjustment Type Center Focus
Magnification Power x12
Chasis -Magnesium Alloy 
Objective Lens Diameter 50 mm
Ocular Adjustment ±4
Prism Type BaK4 Roof Prism
Relative Brightness 25.0
Twilight Factor 22.4
View Angle 5.4
Weight -915 grams
It comes handy with a large protective case that keeps your binoculars safe from dirt, dust, and other types of damage. Adjustable tethers and straps allow for a comfortable carry experience.