**Performance Is Not Negotiable. The Rest is Up To You.**

What are you looking for? Your daughter’s first elk? The next bird on your life list? The last duck in your bag limit? Your quest is your own. And your opportunities are too valuable to compromise with substandard tools. Introducing the B Series Binoculars – elite optics, customized to fit your specific needs, delivered for a fraction of comparable binoculars’ costs.

Maybe the neighbor needs a German accent to tip him off to quality. You know quality when you see it. Superior low-light performance, tack-sharp edge-to-edge clarity, generous depth of field, silky focus mechanism – the B Series stacks up with the most celebrated and expensive binoculars in the world… bar none. If, after putting a demo set through its paces, you disagree send them back, no questions asked. If, after building your own, they fail your son 30 years from now, he can send them back too. We’ll stand behind a Maven as long as it bears our name.

It is a faith born of relationships and experience. Our engineering and manufacturing partner has built precision optical equipment, for the world’s most discerning clientele, since 1950. They’ve paired our modern sportsman inspired designs with the best available materials and state of the art technology to create four uncompromising chassis – the full-frame B1, enhanced B2, compact B3, and the large objective B4. You select a body, then apply your own experience, customizing a dozen elements until the instrument is tailored precisely to your preferences.

The product of our collaboration – designer, engineer and user – is finished stateside and delivered directly to you, bypassing the middleman and his hefty mark-up. The result is an heirloom quality binocular and a whole new way of seeing the world.

You are a Maven. Your vision is unique. It deserves a binocular to match.

Build Your Maven

Exit pupil

B2

7x 6.4mm

9x 5mm

11x 4.1mm

B3

6x 5mm

8x 3.75mm

10x 3mm

B4

10x 5.6mm

12x 4.7mm

15x 3.7mm

FOV

B2

7x 7.4°

9x 7.2°

11x 6°

B3

6x 8.5°

8x 8.2°

10x 6.5°

B4

10x 6.7°

12x 5.5°

15x 4.4°

Apparent FOV (FOV x Power)

B2

7x 51.8°

9x 64.8°

11x 66°

B3

6x 51°

8x 65.6°

10x 65°

B4

10x 67°

12x 66°

15x 66°

Field of view (ft/1000 yds)

B4

10x 351.8

12x 288.8

15x 231

Brightness

B4

10x 31.4

12x 21.8

15x 13.9

Light transmission (%)

B2

7x 93.70%

9x 93.70%

11x 94.80%

B3

6x 94.60%

8x 95.20%

10x 94.60%

B4

10x 93.7%

12x 94.2%

15x 94.2%

Twilight factor

B2

7x 17.7

9x 20.1

11x 22.2

B3

6x 13.4

8x 15.5

10x 17.3

B4

10x 23.7

12x 25.9

15x 29

Multi Position Eyecups Y/N

B4

10x Yes

12x Yes

15x Yes

Eye relief

B2

7x 18mm

9x 17.3mm

11x 16.7mm

B3

6x 18.3mm

8x 15.1mm

10x 15.3mm

B4

10x 17mm

12x 18mm

15x 18mm

Near focus

B2

7x 6.5ft

9x 4.9ft

11x 4.9ft

B3

6x 8.2ft

8x 8.2ft

10x 8.2ft

B4

10x 9.8ft

12x 9.8ft

15x 9.8ft

Eye width adustment

B1

8x 56~73mm

10x 56~73mm

B2

7x 56~75mm

9x 56~75mm

11x 56~75mm

B3

6x 56~73mm

8x 56~73mm

10x 56~73mm

B4

10x 55~74mm

12x 55~74mm

15x 55~74mm

Dimension WxHxD

B1

8x 5×6.2×2.1

10x 5×6.2×2.1

B2

7x 5.7×7.1×2.2

9x 5.7×7.1×2.2

11x 5.7×7.1×2.2

B3

6x 4.7×4.6×1.7

8x 4.7×4.6×1.7

10x 4.7×4.6×1.7

B4

10x 6.1×8.2×2.7

12x 6.1×8.2×2.7

15x 6.1×8.2×2.7

Weight

B1

8x 29.125oz

10x 29.75oz

B2

7x 33.25oz

9x 33.25oz

11x 33.25oz

B3

6x 16.25oz

8x 16.25oz

10x 16.5oz

B4

10x 48oz

12x 48oz

15x 48oz

Lens constr. Obj.

B1

8x 3 groups 4 elements (ED)

10x 3 groups 4 elements (ED)

B2

7x 3 groups 4 elements (ED)

9x 3 groups 4 elements (ED)

11x 3 groups 4 elements (ED)

B3

6x 3 groups 4 elements (ED)

8x 3 groups 4 elements (ED)

10x 3 groups 4 elements (ED)

B4

10x 3 groups 4 elements (ED)

12x 3 groups 4 elements (ED)

15x 3 groups 4 elements (ED)

Lens constr. Ocular

B1

8x 4 groups 5 elements

10x 4 groups 6 elements

B2

7x 4 groups 4 elements

9x 5 groups 6 elements

11x 4 groups 6 elements

B3

6x 4 groups 5 elements

8x 4 groups 5 elements

10x 4 groups 5 elements

B4

10x 4 groups 5 elements

12x 5 groups 6 elements

15x 4 groups 6 elements

Prisms Type

B1

8x Schmidt-Pechan

10x Schmidt-Pechan

B2

7x Abbe-Koenig

9x Abbe-Koenig

11x Abbe-Koenig

B3

6x Schmidt-Pechan

8x Schmidt-Pechan

10x Schmidt-Pechan

B4

10x Abbe-Koenig

12x Abbe-Koenig

15x Abbe-Koenig

Prism reflective Coating type

B1

8x Dielectric coating

10x Dielectric coating

B3

6x Dielectric coating

8x Dielectric coating

10x Dielectric coating

B4

10x N/A

12x N/A

15x N/A

ED Glass

B4

10x Yes

12x Yes

15x Yes

Lens Coating

B1

8x Scratch and Oil Resistant

10x Scratch and Oil Resistant

B2

7x Scratch and Oil Resistant

9x Scratch and Oil Resistant

11x Scratch and Oil Resistant

B3

6x Scratch and Oil Resistant

8x Scratch and Oil Resistant

10x Scratch and Oil Resistant

B4

10x Scratch and Oil Resistant

12x Scratch and Oil Resistant

15x Scratch and Oil Resistant

Pressure tested to what pressure

B1

8x 1m for 30 min. (IPX7)

10x 1m for 30 min. (IPX7)

B2

7x 1m for 30 min. (IPX7)

9x 1m for 30 min. (IPX7)

11x 1m for 30 min. (IPX7)

B3

6x 1m for 30 min. (IPX7)

8x 1m for 30 min. (IPX7)

10x 1m for 30 min. (IPX7)

B4

10x 1m for 30 min. (IPX7)

12x 1m for 30 min. (IPX7)

15x 1m for 30 min. (IPX7)

Storage temperature

B1

8x -40°F~158°F

10x -40°F~158°F

B2

7x -40°F~158°F

9x -40°F~158°F

11x -40°F~158°F

B3

6x -40°F~158°F

8x -40°F~158°F

10x -40°F~158°F

B4

10x -40°F~158°F

12x -40°F~158°F

15x -40°F~158°F

Functional temperature

B1

8x -13°F~140°F

10x -13°F~140°F

B2

7x -4°F~140°F

9x -4°F~140°F

11x -4°F~140°F

B3

6x -4°F~140°F

8x -4°F~140°F

10x -4°F~140°F

B4

10x -4°F~140°F

12x -4°F~140°F

15x -4°F~140°F

Frame Material

B3

6x Polymer

8x Polymer

10x Polymer

B4

10x Polymer

12x Polymer

15x Polymer

Internal Gas Purged

B1

8x Nitrogen

10x Nitrogen

B2

7x Nitrogen

9x Nitrogen

11x Nitrogen

B3

6x Nitrogen

8x Nitrogen

10x Nitrogen

B4

10x Nitrogen

12x Nitrogen

15x Nitrogen

Tripod Adaptable Y/N

B4

10x Yes

12x Yes

15x Yes

Build Your Maven