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Oberwerk high-quality 60mm binoculars- at a 50mm price! That extra 10mm doesn't sound like very much- but 60mm objectives gather 30% more light than 50mm models (surface area = pi*r²). With that much extra light-gathering power, these are ideal for a low-cost entry into binocular astronomy. They are also excellent for birding, nautical applications, and surveillance.
Not only do you get big 60mm objectives- you get the same highest-quality BAK4 prisms that are found in much more expensive models. All air-to-glass surfaces are fully broadband multi-coated to decrease light loss due to scattering and reflections. These are available in your choice of either 9x, 12x, 15x, or 20x magnification.

All Oberwerk binoculars have rugged rubber-armored metal bodies, all-glass lenses, right ocular diopter adjustment, brass 1/4-20 tripod adapter threading, case, caps, and strap.

Objective size 60mm Magnification Choice of 9x, 12x, 15x, or 20x Prism BAK4 Optic coating Fully broadband multi-coated Field of view 9x- 95m at 1000m (5.5°) 12x- 100m at 1000m (5.7°) 15x- 71m at 1000m (4.1°) 20x- 52m at 1000m (3°) Exit pupil diameter 9x- 6.6mm 12x- 5mm 15x- 4mm 20x- 3mm Exit pupil distance (eye relief) 9x- 16mm 12x- 14mm 15x- 12mm 20x- 10mm Minimum focus distance 9x- 10m 12x- 15m 15x- 15m 20x- 20m Weight 2.3 lbs.