Why settle with the ordinary when extraordinary is within your grasp! The Swift Eaglet Series is a MUST SEE for all birding and outdoor enthusiasts. The 7x36 is ideal for butterfly and humming bird watching. If you haven't looked through a pair of these binoculars, you are missing one of the world's best views! This lightweight roof prism binocular with phase coating offers unsurpassed optical quality. Its Kellner Ocular System and three objective lenses eliminate spherical aberration and reduces astigmatism, which results in especially high resolving power. In addition, the Eaglet boasts the latest advancement in prism coating technology. CFT™ (Cold Fusion Technology™) is the unique process of applying multiple coatings to the surface of each roof prism without exposure to high temperatures, thereby protecting the integrity of the prism surface. This process increases reflective performance up to 99.8%, enhances brightness and color definition making this glass ideal for dawn to dusk use.