High-Performance
Observational Binoculars
A Ø120 mm large-aperture objective lens and 20× magnification bring distant targets into bright, sharp view. These Korean-made large-aperture binoculars come from Baeksan Science Inc., which has designed and built large-aperture optics in-house since 1996.

Precision optical design for
bright, sharp long-range viewing
High-quality optical materials and AR fully multi-coated lenses cut light loss, and the left and right optical axes are precisely aligned.
- Objective lens Ø120 mm · Magnification 20×
- AR fully multi-coated lenses
- Individual focusing · Eye relief 17 mm · Diopter −4D~+3D
- Interpupillary distance adjustment 58~78 mm

Steady observation,
even in harsh conditions
A corrosion-resistant aluminum alloy body and STS316 stainless steel parts keep it running reliably for years in coastal and outdoor environments.
- Nitrogen-purged, fully waterproof IPX7 (1 m depth, 30 min)
- Operating temperature −20 ~ +45 ℃
- Azimuth 360° · Vertical −30° ~ +70° (locking pin)

From design to A/S,
all in Korea
We're the only company in Korea that builds large-aperture binoculars in-house. We make more than 50 molds and over 200 parts ourselves, then assemble them.
- Supplied to the Army, Navy, Marine Corps and Coast Guard for security and surveillance
- Fast repairs and parts supply, thanks to production in Korea
- 5-year warranty from the date of installation, excluding lens damage
From defense to maritime surveillance,
observation for every field
Take a closer look at
BS-K7 technology and performance
Optical, mechanical and environmental specs, the pedestal and stand setup, and A/S details, all in one place.
Go to Details page →