B.1 - 8x42 / 10x42
The flagship Maven B.1 Binocular is our recommended go-to for an all-purpose optic for hunting, birding, and general-purpose wildlife viewing. Made to handle most situations, the B.1 features superior low-light performance, tack-sharp edge-to-edge clarity, generous depth of field, 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.
| Magnification | 8x | 10x |
| Obj. lens diameter | 42mm | 42mm |
| Exit pupil | 5.25mm | 4.2mm |
| FOV | 7.4° | 6.5° |
| Apparent FOV (FOV x Power) | 59.2° | 65° |
| Field of view (ft/1000 yds) | 388 | 341 |
| Brightness | 27.6 |
17.6 |
| Light transmission (%) | 91.90% | 90.90% |
| Twilight factor | 18.3 |
20.5 |
| Multi Position Eyecups Y/N | Yes | Yes |
| Eye relief | 18.6mm | 16mm |
| Near focus | 6.6ft | 6.6ft |
| Eye width adjustment | 56~73mm | 56~73mm |
| Dimension WxHxD | 5x6.2x2.1 |
5x6.2x2.2 |
| Weight | 29.125 oz | 29.75 oz |
| Lens constr. obj. | 3 groups 4 elements (ED) | 3 groups 4 elements (ED) |
| Lens constr. ocular | 4 groups 5 elements | 4 groups 6 elements |
| Prisms type | Schmidt-Pechan |
Schmidt-Pechan |
| Prism reflective coating type | Dielectric Coating |
Dielectric Coating |
| ED glass | Yes | Yes |
| Lens coating | Scratch and Oil Resistant | Scratch and Oil Resistant |
| Diopter correction (dpt) | +/-3 | +/-3 |
| Pressure tested to what pressure | 1m for 30 min. (IPX7) | 1m for 30 min. (IPX7) |
| Storage temperature |
-40°~158°F |
-40°~158°F |
| Functional temperature | -13°~140°F | -13°~140°F |
| Frame material | Magnesium | Magnesium |
| Internal gas purged | Nitrogen | Nitrogen |
| Tripod Adaptable Y/N | Yes | Yes |
| Origin | Japanese components assembled in the US | Japanese components assembled in the US |