Features of 4X30 Childrens Binoculars:
1.Full environmental protection material.
2.Optical glass.
3.Full coated lens.
4.Roof prism system.
5.Eyepieces can be folded for use with spectacles.
6.Compact and easy to use.
7.Rubber aromrred, Resistance to fall and non-slip.
8.Best gift for kids to observing the world.
Specifications of 10x50 Large Objective Binoculars:
Magnification 10
Objective diameter(mm) 50mm
Prism Type BK7
Number of lens 4Pieces3 groups
Lens Coating MC
Focus System Cent.
Exit Pupil Diameter(mm) 5.5mm
Exit pupil distance(mm) 17mm
Angle of View 6.9°
Field of View 367ft/1000yds, 122m/1000m