bak4 20x50 binoculars for astronomy

Brand Name:Tontube

Model Number:KBPC4R 7X50

Place of Origin:Sichuan, China

20x50 Binoculars for Adults Marine Military Binoculars Waterproof with Rangefinder Compass BAK4 Prism FMC Lens for Birdwatching Hunting Boating About this item 7x50 Binoculars: Binoculars floating with 7x magnification and 50mm large objective lens.23 mm ...

Brand Name:Tontube OEM/ODM

Model Number:10X50 PORRO PRISM BINOCULARS

Place of Origin:Sichuan, China (mainland)

... large objective lens and 367ft/1000yds large field of view good for fast moving 20X50 Porro Prism Binoculars Descriptions: This binocular uses the BAK4 FMC Lens,its FMC(fully multi-coated) film aspheric lens provides superior light transmission. It can

Brand Name:OEM, ODM All Available

Place of Origin:China

...Designed Wide Angle Compact Binoculars Telescope For Hunting Parameter: Product Name 10x50 compact binoculars 12x50 compact binoculars 20x50 compact binoculars Magnification 10x 12x 20x Field angle 6.5° 8.2° 8.2 Prism Bak4 Bak4 Bak4 Field of View 367ft@...

Brand Name:OEM, ODM All Available

Place of Origin:China

...Binoculars Astronomy Prismaticos For Hunting Parameter: TYPE 10x50 Waterproof ED Binoculars BODY STYLE SEMI-AROMATIC THERMOPLASTIC BODY POWER 10 X ± 5% OBJECTIVE DIAMETER 50mm ± 1 mm FEILD ANGLE 6.5 ° ± 5% FIELD OF VIEW(at 1000m/at 1000yds.) 114m / 341ft. EXIT PUPIL DIA. 5mm ±10% NEAR FOCUS 3m EYE-RELIEF 17.2mm RELATIVE BRIGHTNESS 22.4 OBJECTIVE LENS: 4E3G OCULAR LENS: 5E3G LENS TYPE: SPHERICAL LENS PRISM: ROOF BaK4...