Firefield FF12020 10x42mm BaK-4 Roof Prism Binoculars Black

The Firefield FF12020 binoculars deliver professional-grade optical performance with 10x magnification and 42mm objective lenses for superior light gathering in tactical and outdoor applications. BaK-4 roof prism construction ensures maximum light transmission and crisp image clarity across the entire field of view.

What Makes This Different

Unlike standard binoculars that compromise on durability, the FF12020 features military-grade rubber armor coating that withstands impact, moisture, and temperature extremes. The BaK-4 prism glass provides 15% better light transmission than standard BaK-7 prisms found in comparable models. Fully multi-coated lenses reduce glare and increase contrast for enhanced target identification in challenging conditions.

Key Features

• 10x42mm configuration provides optimal balance of magnification and field of view
• BaK-4 roof prism system delivers superior optical clarity and light transmission
• Waterproof and fog-proof construction rated for all-weather use
• Non-slip rubber armor coating protects against drops and impacts
• Twist-up eyecups accommodate users with or without eyeglasses
• Central focus knob with diopter adjustment for precise image tuning
• Tripod adaptable with standard 1/4-20 threading

Field testing confirms consistent performance across temperature ranges from -20°F to 140°F without internal fogging or focus drift. The 10x magnification provides detailed observation at extended ranges while maintaining a steady viewing experience during handheld use. Law enforcement, hunters, and outdoor professionals rely on this optical configuration for surveillance, wildlife observation, and tactical reconnaissance applications.

Technical Specs

• Magnification: 10x
• Objective lens diameter: 42mm
• Prism type: BaK-4 roof prism
• Field of view: 330 feet at 1000 yards
• Eye relief: 15mm
• Close focus distance: 8.2 feet
• Weight: 24.7 ounces
• Dimensions: 6.1 x 5.1 x 2.2 inches
• Construction: Waterproof, fog-proof, nitrogen purged
• Coating: Fully multi-coated optics

The FF12020 represents proven optical engineering at a competitive price point, combining professional-grade components with field-tested durability. Firefield backs this model with comprehensive warranty coverage, making it a low-risk investment for serious optical needs.