Celestron – TrailSeeker ED 8x42 Binoculars – Compact ED Binocular for Birdwatching and Outdoor Activities – Binocular with ED Objective Lenses – Fully Broadband Multi-Coated Optics – BaK4 Roof Prism.

The 8x42 TrailSeeker ED binocular provides high-level outdoor performance—a perfect compact ED binocular for avid birders, hunters, and outdoor enthusiasts. TrailSeeker ED is packed with optical, mechanical, and ergonomic features that make it comparable to binoculars costing two to five times as much. Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration, also known as color fringing, a visual defect common in binoculars. TrailSeeker ED delivers edge-to-edge sharpness with excellent color correction and razor-sharp images. TrailSeeker ED also offers fully broadband multi-coated optics and phase- and dielectric-coated BaK-4 prisms. Taken together, these features maximize light transmission for the brightest, most detailed images possible. TrailSeeker ED is composed of lightweight and durable magnesium alloy. Its tough, rigid frame is coated with rubber to stand up to hard use in the field. What’s more, the binocular is fully waterproof and filled with dry nitrogen gas to prevent internal fogging of lenses. TrailSeeker ED includes both a neck strap and a carrying harness so you can choose the option that’s most comfortable for you. It’s also tripod adaptable, so you can mount it on any standard photographic tripod for extended viewing or digiscoping sessions. The binocular also includes a protective soft case for storage or transport.

• PREMIUM ED OBJECTIVE LENSES: Extra-Low Dispersion (ED) glass virtually eliminates chromatic aberration or color fringing, a visual defect common in binoculars. You'll enjoy razor-sharp images with outstanding, true-to-life color.
• PHASE-COATED BaK-4 PRISMS FOR BRIGHTER VIEWS: The prisms inside TrailSeeker ED feature quality BaK-4 glass with phase coatings that maximize light transmission to your eye. The result is bright, highly detailed views—even in low light conditions.
• DURABLE, WATERPROOF BODY: A rubber-armored, polycarbonate housing protects your binoculars from damage and stands up to the toughest weather conditions. They're also fully waterproof and nitrogen purged to prevent internal fogging of the lenses.
• TWIST-UP EYECUPS FOR QUICK ADJUSTMENT: Large focus knobs make for easy and precise focusing. Twist-up eyecups allow you to customize the binocular's eye relief to obtain a full field of view with or without eyeglasses.
• FIELD-WORTHY ACCESSORIES INCLUDED: TrailSeeker ED comes complete with a comfortable carry harness, a deluxe padded neck strap, a single piece eyepiece cover, tetherable objective covers, a durable padded carrying case, and more.
• UNBEATABLE WARRANTY & CUSTOMER SUPPORT: Buy with confidence from Celestron, a leading optics brand in California since 1960. Your purchase includes a Celestron Limited Lifetime US Warranty & US-based expert tech support.