With most powerful binoculars, it's hard to use the strongest magnification for long; the image is too "jumpy". The zoom feature on this 8- to 24-power instrument allows you to fine-tune the image for the perfect balance of magnification and stability, with precise detail resolution at high power. Compact and lightweight, it's ideal for travel and wildlife-watching. Turn-slide rubber eyecups allow you to quickly achieve comfortable eye relief, even if you wear eyeglasses. Features a rubber-coated nonslip grip and unsurpassed Nikon quality. 25-mm objective lens.