BX-4 Pro Guide HD | 10x42mm


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10x binoculars may be the Jack-of-all-trades when it comes to glassing. With enough magnification for long-range identification, the 10x42mm and 10x50mm BX®-4 Pro Guide™ HD binos will also get the job done in tight situations; all while being compact and lightweight. Built around our Twilight Max HD Light Management System, the BX®-4 Pro Guide™ HD binoculars boast un-paralleled brightness, edge-to-edge clarity, and advanced glare management elements; helping you see more detail in less light. Their ergonomic open-bridge design is comfortable for extended glassing sessions and delivers key weight savings for those long backcountry adventures.


  • 100% Waterproof and Fogproof - Waterproof, fogproof, and guaranteed to perform for life
  • BAK 4 Prisms - Delivers a perfectly round exit pupil with virtually no edge distortion and a crisp, clear image.
  • Ergonomic Design - Our ergonomic design ensures our products are slim, lightweight, and fit well in your hands no matter what size they are.
  • Fully Multi-coated Lens System - Our fully multi-coated lens system ensures maximum brightness for clarity, contrast, and color fidelity.
  • High Definition - High-definition, calcium-fluoride lenses ensure incredible clarity at all magnification levels.
  • Open Bridge Roof Prism Design - Open bridge, roof prism design is extremely lightweight and ergonomic.
  • Phase Coated - Phase coated roof prisms significantly increase resolution for a sharp sight picture from edge-to-edge of the visual field.
  • Twilight Max HD Light Management System - See more in less light with Twilight Max HD Light Management System.  This advanced light management system adds up to 30 extra minutes of shooting light and eliminates 90% more glare-producing stray light than competitors with high definition edge-to-edge lens clarity.
  • Twist Up Eyecups - Features twist-up eyecups and generous eye relief for comfortable extended viewing.


  • Interpupillary Distance Range (cm) - 58-74
  • Weight (oz) - 24
  • Linear FOV (ft/1000 yd) - High - 326
  • Linear FOV (m/1000 m) - High - 109
  • Length (in) - 5.6
  • Length (mm) - 142
  • Eye Relief (mm) - High - 16
  • Angular FOV (degrees) - High - 6.2
  • Weight (g) - 686
  • Exit Pupil (mm) - High - 4.2
  • Close Focus Distance (ft) - 7.5
  • Close Focus Distance (m) - 2.3
NOTICE: Some products in this store can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Please check the product label for warning information. For more information go to P65Warnings.ca.gov. We cannot ship any products into California that are affected by Proposition 65.

SHIPPING CHANGES: Due to new sales tax rules in the state of Colorado, effective June 1, 2019, purchases made online through JAX Mercantile for customers in the state of Colorado will only be able to be shipped to addresses within JAX current tax jurisdictions in Fort Collins, Loveland, Lafayette, and Broomfield. Customers in the state of Colorado who do not have shipping addresses within these zip codes may still opt for in-store pickup at any JAX store location when making a purchase on the JAX website. Learn more on our shipping and returns page.

Customer Service: 1-800-336-8314 Monday - Friday 9am to 5pm MTN