Steiner 10×50 Military/Marine Binoculars

Description

Built for tactical surveillance and long-range harbor watch, the Steiner 10×50 Military/Marine Binoculars yields a 301.8-foot field of view at 1000 yards (5.75-degree actual). The 5mm exit pupil and 16mm eye relief maintain bright contrast in twilight. A fixed 66-foot close focus limit prevents near-range botanical or backyard songbird observation.

Fully multi-coated optics feed high-density BaK-4 Porro prisms to preserve natural three-dimensional depth and image contrast. Clad in chemical-resistant NBR Long Life rubber, the Makrolon polycarbonate chassis measures 8.1 by 5 by 3 inches at 35.3 oz (1001 g). Built water-resistant and nitrogen purged against internal fogging, it utilizes Sports-Auto-Focus individual helical ocular adjusters, fold-down rubber eyecups, and front 1/4-20 tripod adapter threading.

Key Features of Steiner 10×50 Military/Marine Binoculars

A heavy-duty tactical optic engineered for coastal patrols, base security, and commercial vessels operating in rough sea conditions. The Sports-Auto-Focus system keeps everything sharp from 20 meters to infinity without touching a center wheel.

• 10x magnification paired with 50mm objective lenses producing a 5mm exit pupil
• High-density BaK-4 Porro prisms delivering natural stereoscopic depth perception
• Broadband multi-coated optical elements providing high light transmission
• 301.8 ft field of view at 1000 yd (5.75-degree actual angle)
• 16mm eye relief with soft fold-down rubber eyecups
• Sports-Auto-Focus system providing continuous depth of field from 66 feet to infinity
• Nitrogen gas purged Makrolon polycarbonate chassis with NBR rubber armor
• Heavy 35.3 oz nautical frame with front 1/4-20 tripod adapter threading

Porro Prism Optics & Twilight Contrast

The traditional Porro prism configuration channels photons without reflective coating losses, keeping contrast high across shadowy waterlines. Fully multi-coated glass elements control internal flare, resolving unlit buoys and shoreline contours through dusk while maintaining sharp target separation across roughly 85 percent of the frame.

Makrolon Polycarbonate Body & Sports-Auto-Focus Action

The Makrolon housing withstands direct impacts up to 11 Gs without shifting factory collimation. Individual ocular focus collars calibrate each eye once to infinity, eliminating mechanical drift from heavy engine vibration, while the oil-resistant NBR rubber armor deadens contact noise against boat rails.

• Sports-Auto-Focus eliminates the need to adjust focal wheels during fast-moving maritime operations
• Nitrogen-purged chambers prevent internal lens condensation across extreme coastal temperature shifts
• Fold-down rubber eyecups allow quick adaptation for observers wearing sunglasses or protective eyewear

Steiner Heritage Lifetime Warranty & Gear

Steiner covers this binocular with their lifetime Heritage Warranty, providing repair or replacement coverage without requiring warranty cards or sales receipts. The complete factory package contains the Steiner 10×50 Military/Marine Binoculars, padded neck strap, durable carry case, objective lens covers, rain protection cap, and an instruction sheet.