B.4 - 10x56 / 12x56
The Maven B.4 Binocular was designed to pick up where the B.2 leaves off and is built as an alternative to low to mid-powered spotting scopes. Built with a larger than typical ocular eyepiece, the B.4 offers a broader viewing area for when dimly-lit situations call for extra light and extra magnification. The B.4 is a large objective optic and is our recommended optic for hunters and birders who prefer to glass with a tripod setup.
The B.4 also features tack-sharp edge-to-edge clarity, generous depth of field, and a silky focus mechanism. Additionally, the split frame design gives this larger objective optic a lighter weight chassis all while maintaining durability.
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.
-Size: 8.2 in.
-Weight: 48 oz.
-Extra-Low Dispersion ED Glass
-Waterproof and Fog Proof
-Fully Multi-Coated Lenses
-Exceptionally Clear, Bright, High Contrast Image
-Excellent Color Fidelity
-Direct to Consumer / No Retail Markup
Binocular Comparison Chart (PDF)
Binocular Manual (PDF)
|Obj. lens diameter||56mm||
Field of View (FOV)
|Apparent FOV (FOV x Power)||
|Field of view (ft/1000 yds)||351.8||288.8|
|Light transmission (%)||93.70%||94.20%|
|Multi Position Eyecups Y/N||Yes||
|Eye width adjustment||56~74mm||
|Weight||48 oz||48 oz|
|Lens constr. obj.||3 groups 4 elements (ED)||
3 groups 4 elements (ED)
|Lens constr. ocular||4 groups 5 elements||5 groups 6 elements|
|Prism reflective coating type||N/A||
|Lens coating||Scratch and Oil Resistant||
Scratch and Oil Resistant
|Diopter correction (dpt)||+/-2||
|Pressure tested to what pressure||1m for 30 min. (IPX7)||
1m for 30 min. (IPX7)
|Internal gas purged||Nitrogen||
|Tripod Adaptable Y/N||Yes||Yes|
|Origin||Japanese components assembled in the US||
Japanese components assembled in the US