The Oberwerk 20×70 ED Ultra is the most powerful binocular in the Ultra Series, designed for high-level astronomical observing and long-distance nature viewing. The ED FK-61 low-dispersion objectives minimize chromatic aberration, delivering clean, high-contrast images without colored fringes. Integrated field flatteners ensure outstanding edge-to-edge sharpness across nearly the entire field of view.

With 20× magnification and 70 mm objectives, this binocular provides bright, detailed views even in low-light conditions. The magnesium alloy body is lightweight yet extremely durable, finished with grey rubber armor and black/red accents. It is fully waterproof and nitrogen-filled, and the integrated objective covers protect the optics during field use.

Main features

• 70 mm ED FK-61 objectives with excellent chromatic correction
• field flatteners for sharpness across almost the entire field
• 20× magnification ideal for astronomy and long-range observation
• individual-focus eyepieces for precise adjustment
• fully broadband multi-coated optics
• waterproof, nitrogen-purged magnesium body
• integrated objective covers
• compatible with tripod mounts (Heavy-Duty L adapter included)

Included items

• Oberwerk 20×70 ED Ultra binoculars
• Oberwerk Heavy-Duty aluminum case
• Oberwerk Heavy-Duty L tripod adapter
• padded neck strap

Technical specifications

• magnification: 20×
• objective diameter: 70 mm
• real field of view: 3.5°
• exit pupil: 3.5 mm
• eye relief: 12–15 mm
• minimum focus distance: 15–25 m
• interpupillary distance (IPD): 57–75 mm
• weight: 2.38 kg
• dimensions: 28 × 21 × 10 cm