The Hawke Nature-Trek 10x42 Binocular (Green) (Model 35103) is a mid-to-long-range roof-prism optic engineered for open-terrain game spotting, pest management, and daytime scouting. Built with Hawke System H2 optics, it pairs 10x magnification and 42 mm objective lenses with high-resolution phase-corrected BAK-4 roof prisms and fully multi-coated (FMC) glass. The lightweight polycarbonate body is wrapped in textured green rubber armouring and nitrogen-purged to deliver a completely waterproof and fog-proof optical system suitable for demanding field environments.

Key Features

• Phase-Corrected BAK-4 Roof Prisms: Delivers sharp image resolution, accurate colour rendition, and high contrast across a 101 m at 1000 m field of view.
• Top-Hinge Ergonomic Chassis: Shock-resistant polycarbonate construction provides a secure single- or two-handed grip while maintaining a total carry weight of 638 g.
• Precision Adjustments: Features a smooth 2-turn central focus wheel, right-eye diopter adjuster, and multi-position twist-up eyecups with 13 mm eye relief.
• Weatherproof Engineering: O-ring sealed and nitrogen-purged housing ensures 100% waterproof and fog-proof performance against sudden temperature shifts and heavy precipitation.
• Tripod Adaptable: Integrated 1/4"-20 UNC front mounting thread under the hinge cap allows static observation from a vehicle mount or tripod adapter.

Product Specifications

• Magnification: 10x
• Objective Lens Diameter: 42 mm
• Optical Coating: Fully Multi-Coated (FMC)
• Prism Type: Phase-Corrected BAK-4 Roof Prism
• Field of View: 101 m @ 1000 m (304 ft @ 1000 yds) / 5.8°
• Close Focus: 2.0 m (6.6 ft)
• Eye Relief: 13 mm
• Exit Pupil: 4.2 mm
• Interpupillary Distance (IPD): 56–75 mm (2.2–3.0 in)
• Dimensions: 142 mm (H) × 106–125 mm (W)
• Weight: 638 g (22.5 oz)
• Mounting Interface: 1/4"-20 UNC tripod socket

Who is the Hawke Nature-Trek 10x42 (Green) for?

• Open-country deer and pest hunters — Needs 10x magnification and a 101 m @ 1000 m field of view to scan vast paddocks, identify bedded game, and assess targets at mid-to-long distances from 100 m out past several hundred metres with this roof-prism hunting binocular.
• Active bushwalkers and birdwatchers — Requires a lightweight 638 g roof-prism binocular that minimizes neck and shoulder fatigue during all-day handheld carry, while utilizing a 2.0 m close-focus capability for near-distance bird and wildlife observation.

Less suitable for: Extreme-range target identification past 500–600 m where high-power 20–60x spotting scopes or 12x–15x tripod-mounted binoculars provide necessary optical resolving power, or deep dusk, pre-dawn, and dense forest canopy use where the 4.2 mm exit pupil is outperformed by larger 8x42, 10x50, or 8x56 low-light binoculars.