RSPB HD 10x25 Compact Binoculars

The RSPB HD 10x25 compact binoculars (product ID 49568989806899) deliver 10x magnification through a 25mm objective lens. That combination gives you a field of view of 113m at 1000m and a 6.5-degree angular view. Weighing just 300g they fit in a jacket pocket and go anywhere without effort.

ED (extra low dispersion) glass objective lenses reduce chromatic aberration and colour fringing. The result is a sharp and surprisingly bright image for a 25mm lens. Reviewers specifically note the clarity and brightness outperform non-ED compacts. The field of view at 1000m is 113m which is solid for a 10x25 format.

The body uses magnesium alloy castings for a strong yet lightweight chassis. At 300g it handles easily for extended use. Nitrogen filling makes it fully waterproof and fogproof in changing weather. Close focus is just 2m which is excellent for butterflies and close-range wildlife. Eye relief is 13mm.

A 10-year manufacturer warranty backs the build. The binoculars come with an exclusive HD fabric case. For travellers and birdwatchers who want ED glass quality in a pocketable body these deliver real performance without the bulk.

The 10x25 format means 10x magnification through a 25mm objective lens giving an exit pupil of 2.5mm. That is fine in good daylight but limits low-light use. ED glass reduces chromatic aberration the colour fringing that blurs edges producing sharper and more colour-accurate images than standard glass. The magnesium alloy body is nitrogen purged which prevents internal fogging when moving between temperatures. Field of view is 113m at 1000m which is reasonable for a 10x compact.

The chassis uses magnesium alloy castings which give structural strength at low weight. The objective lenses are ED (extra low dispersion) glass which controls colour fringing. The body is fully sealed and nitrogen filled. No rubber armouring material is specified in the product data.

Use a lens cloth or brush to clean glass never wipe dry with tissue. Store in the supplied HD fabric case away from moisture and heat. Check eyecups and hinge regularly for wear. Keeping the binoculars free from knocks and in the case helps maintain the 10-year warranty.