Model	BM5517
Specification	8×21 mm	10×21 mm
Magnification	8x	10x
Obj.lens(mm)	21	21
F.O.V.(m/1000m)	122	106
Exit pupil(mm)	2.6	2.1
Eye relief(mm)	10.0	10.0
Weight(g)	175	175

Model	BM5517	Eye relief (mm)	11.0
Specification	10x25mm	Dusk Index	15.8
Magnification	10x	Relative Brightness	6.5
Obj.lens (mm)	25	Prism System	Porro
Eyepiece diameter(mm)	12	Prism Glass	Bk7
Field Angle	5.5°	Focus System	Center
Field of View @ 1000m	96m	Lens Coating	Fully Multi
Field of View @ 1000yds	288ft	Eyecups	Fold-Down
Apparent Field of View	55°	Size (mm)	106x58x102
Exit pupil (mm)	2.5	Weight (g)	219