B.5 - 15x56 / 18x56

$ 1,500
Color: Grey / Orange

Built on the foundation of the award-winning B.2 binocular, the large objective B.5 features a small/lighter magnesium frame and Abbe-Koenig prism and is paired with the very same fluorite glass that’s featured in our S Series Spotting Scopes. In both 15x and 18x options, the B.5 is our most powerful binocular and the fluorite glass is a step above ED glass of similar-sized optics. One of the most modern optical systems on the market, this purpose-built binocular is designed to extend your range for those who require increased magnification and the ability to discern detail during those critical low-light periods when covering big, open country. The B.5 is our recommended rig for those who are looking to step up their magnification range, but prefer a lightweight system when carrying a spotting scope is out of the question.

The B.5 also features tack-sharp edge-to-edge clarity, crystal clear glass, considerable eye relief, and a silky focus mechanism.

The Maven B Series represents our elite line of optics, designed to fit your specific needs, delivered for a fraction of comparable binoculars’ costs and stacks up with the most celebrated and expensive binoculars in the world. Whether you choose a stock color unit or configure your own custom-built optic, our modern sportsman-inspired designs are paired with the best available materials and state of the art technology to create an uncompromising optic. 


Includes neoprene neck strap, lens caps and double-layered microfiber storage bag.


-Premium Model
-Size: 8.2 in.
-Weight: 45 oz.
-Fluorite glass
-Waterproof and Fog Proof
-Fully Multi-coated lenses 
-Exceptionally clear, bright, high contrast image
-Excellent color fidelity
-Tripod Adaptable
-Lifetime Warranty
-Direct to Consumer / No Retail Markup


Binocular Comparison Chart (PDF)
Binocular Manual (PDF)

 Magnification 15x 18x
Obj. lens diameter 56mm
Exit pupil 3.7mm 3.1mm
Apparent FOV (FOV x Power)
Field of view (ft/1000 yds) 236
Brightness 13.9
Light transmission (%) 92.90% 92.90%
Twilight factor 29
Multi Position Eyecups Y/N Yes
Eye relief 17.8mm 18mm
Near focus 9.8ft 9.8ft
Eye width adjustment 56~75mm
Dimension WxHxD 6.1x8.2x2.5
Weight 45 oz 45 oz
Lens constr. obj. 3 groups 4 elements (ED)
3 groups 4 elements (ED)
Lens constr. ocular 4 groups 6 elements 4 groups 6 elements
Prisms type Abbe-Koenig
Prism reflective coating type N/A
ED glass Flourite
Lens coating Scratch and Oil Resistant
Scratch and Oil Resistant
Diopter correction (dpt) more than +/-2
more than +/-2
Pressure tested to what pressure 1m for 30 min. (IPX7)
1m for 30 min. (IPX7)
Storage temperature
Functional temperature
Frame material Magnesium
Internal gas purged Nitrogen
Tripod Adaptable Y/N Yes Yes
Origin Japanese components assembled in the US
Japanese components assembled in the US

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