Styrka 8x42 S9-Series ED Binocular (Black)

Styrka 8x42 S9-Series ED Binocular (Black)

Styrka 8x42 S9-Series ED Binocular (Black)

B&H # STS9B8X42 MFR # ST-39910
Styrka 8x42 S9-Series ED Binocular (Black)

Styrka 8x42 S9-Series ED Binocular (Black)

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Expected availability: 2-4 weeks

Product Highlights

  • Extra Low-Dispersion Glass Objectives
  • Phase-Corrected SK-15 Roof Prisms
  • SLX-MAX Fully Multi-Coated Optics
  • Wide 60° Viewing Angle
  • Nitrogen-Filled, Water and Fogproof
  • Open-Bridge/Dual-Hinge Configuration
  • Large Center Focusing Wheel
  • Slip-Resistant Rubberized Armor
  • Tripod Mountable with Optional Adapter
  • Twist-Up Eyecups
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Options: 8x42


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Styrka ST-39910 overview

  • 1Description

Styrka's flagship optic series, the 8x42 S9-Series ED Binocular is engineered with complementary technologies to produce and optic that is built to perform well in low-light conditions and in the harshest environments. First is the use of extra low-dispersion (ED) glass in the lens elements to correct chromatic and spherical aberrations. Next are high-density glass SK15 roof prisms that have a high refractive index that limits internal light diffraction to boost contrast and brightness. The prisms are also phase-corrected and dielectric coated, which further limit internal light loss and diffraction, improving image contrast. The optical path is fully multi-coated with their proprietary SXL-MAX anti-reflection coatings which increase light transmission, image contrast and sharpness, and provide true color rendition. This all translates to an immersive observational experience showing bright and clear high-contrast images with accurate color across the entire wide field of view - especially at low light such as dawn and dusk, and heavily overcast skies.

The chassis is built with an open-bridge/dual-hinge design which offers more gripping surface without sacrificing strength, and helps to reduce the overall weight. Made for a life outdoors, the optical tubes are nitrogen-filled and O-ring sealed to make them not only fogproof when moving between extreme temperatures, but also waterproof and submersible to 3.3' for up to 30-minutes. The exterior has black textured rubberized armor that protects against knocks and drops, and offers a slip-resistant grip for sure handling in cold and wet conditions. Styrka includes a one-piece ocular rainguard and tethered objective lens covers, plus a binocular harness that keeps the binocular close to the body while moving to eliminate snags and swing, and relieve neck strain by redistributing the weight to the shoulders.

Optical Performance
  • 10x magnification
  • 42mm objective lenses
  • High-density SK15 roof prisms
  • Extra low-dispersion glass reduces chromatic and spherical aberrations for increased contrast and improved color rendition and sharpness without distortion across the entire field of view
  • High refractive index SK15 prism glass greatly reduces internal light reflection to increase clarity and contrast
  • Proprietary broadband anti-reflection SXL-MAX fully multi-coated optics improve light transmission and color fidelity across the entire visual spectrum, and image contrast
  • Phase-corrected prism coatings increase contrast, clarity, and sharpness
  • Dielectric coated prisms reduce internal light diffraction and improve light transmission through the prismatic light path
  • 394' field of view at 1000 yards
  • Wide 60° apparent angle of view
  • Long 18mm eye relief
  • Wide 5.25mm exit pupil
Use and Handling
  • Open-bride/Dual-hinge configuration provides more gripping surface versus closed-bridge designs
  • Large center focusing wheel
  • ±3 right-eye dioptric correction
  • 58-74mm interpupillary adjustment range
  • Twist-up rubber eyecups for comfortable use with or without eyewear
  • Tripod mountable with optional adapter
Construction Details
  • Open-bridge/Dual-hinge design reduces weight without sacrificing strength
  • Slip-resistant black rubberized armoring
  • Nitrogen-filled provide fogproof performance when moving between extreme temperature changes
  • IPX7-rated, O-ring sealed to be submersible to 3.3' (1m) for 30 minutes
  • Includes 1-piece ocular rainguard and two tethered objective lens covers
  • Weight: 30 ounces
UPC: 889151399108
In the Box
Styrka 8x42 S9-Series ED Binocular (Black)
  • Lens Cloth
  • Styrka Sticker
  • Binocular Harness
  • Padded Neck Strap
  • Carrying Case with Strap
  • One-Piece Ocular Rainguard
  • 2 x Tethered Objective Lens Covers
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    Styrka ST-39910 specs

    Prism Type Roof
    Magnification 8x
    Objective Lens Diameter 42 mm
    Angle of View 7.5° (actual)
    Field of View 393.7' @ 1000 yd / 131.2 m @ 1000 m
    Minimum Focus Distance 6.6' / 2 m
    Exit Pupil Diameter 5.25 mm
    Eye Relief 18.0 mm
    Interpupillary Adjustment 58.0 to 74.0 mm / 2.3 to 2.9"
    Dioptric Correction ±3
    Focus Type Center
    Tripod Mount Yes (Adapter Optional)
    Dimensions 6.0 x 5.1 x 2.4" / 15.2 x 12.9 x 6.1 cm
    Weight 30.4 oz / 861.8 g

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