Steiner BluHorizons 10x42 Binoculars

A pocket binocular gives up too much light for all-day glassing, but a full-size pair usually means squinting into afternoon glare. The BluHorizons 10x42 answers both: a 42 mm objective and 4.2 mm exit pupil deliver a bright, steady full-size daytime view, while Steiner's AutoBright sunlight-adaptive lenses automatically dim in harsh sun so a bright hillside or open field stays easy on the eyes. It is the everyday 10x for hiking and wildlife watching in changing light.

Textured NBR Long Life rubber armor grips securely in any conditions, the Fast-Close-Focus wheel pulls focus from six feet to infinity with a quick turn, and ergonomic eyecups shield against side glare and wind. Rainproof to an IPX-4 rating, it handles wet weather in the field, and at 25 ounces it stays comfortable on a neck strap through a long day out.

Key Features

• AutoBright sunlight-adaptive lenses. Automatically dim in bright glare for comfortable viewing in harsh sun and off water or snow.
• 42 mm full-size objective. A 4.2 mm exit pupil gives brighter, steadier daytime images than a pocket compact can.
• 10x magnification. Reach for wildlife and landscape detail across open country.
• Fast-Close-Focus. A center wheel pulls sharp focus from a 6 ft close focus out to infinity.
• Rainproof (IPX-4) and rubber-armored. Textured NBR Long Life armor built for wet-weather outdoor use.

Ideal For

• All-day outdoor glassing for hikers and wildlife watchers who want one versatile 10x.
• Bright, glare-heavy environments where AutoBright keeps sunlit water, snow, and open fields comfortable to watch.
• Buyers weighing size against carry: for a pocketable version of the same AutoBright optics, step down to the compact BluHorizons 10x26.

The BluHorizons is a rainproof everyday binocular rather than a nitrogen-sealed, submersible optic, and it is backed by the Steiner Heritage lifetime warranty.