8X40 Outdoor Long Distance Porro Binoculars (BM-5109B)

• Type: Binocular
• Magnification: 8X
• Function: Waterproof, Wide Angle
• Usage: Gift, Travel
• Lens Type: Prime Lens
• Lens: Glass
• Model NO.: BM-5109B
• Objective Aperture: >50mm
• Focusing Type: Center Focusing
• Aperture: <50mm
• Prism Type: Porro/Bak4
• Transport Package: Color Box
• Trademark: OEM
• Origin: China
• Production Capacity: 10000PCS/Month

Product Description

8X40 outdoor long distance porro binoculars(BM-5109B) 

 

Magnification	8X
Objective diameter(mm)	40mm
Prism Type	Porro/BAK4
Number of Lens	6pcs/4groups
Lens Coating	FMC
Angle of View	7.85°
Field of View	137m/1000m,412ft/1000yds
Exit Pupil Diameter(mm)	4.8mm
Eye Relief(mm)	19.06mm
Relative Brightness	23.04
Twilight Index	50.56
Interpupillary Distance	54mm-73mm
Resolution	≤4"
Near Focus	5m
all weather	Yes
shockproof and waterpoof	Yes
Nitrogen filled	Yes
Eyecup system	fold down
Production Dimension	180X152X63mm
product weight	960g