The Activa is easy to take with you anywhere, and its 10x magnification brings your subject up close. Thanks to the sensibly sized outer lenses, this model is compact and light. Compared to the cheapest binoculars, the Activa is a capable piece of gear: the lenses feature fully multi-coated (FMC) anti-reflective coatings, and it includes twist-down eyecupsgreat for eyeglass wearers. The binoculars are protected by a rubberized outer surface. There's a tripod thread on the front, allowing you to attach a tripod adapter (sold separately). This model is not waterproof. The cost savings here have been invested in providing excellent image quality for its price range. - Magnification: 10x - Objective lens diameter: 32 mm - Closest focusing distance: 3 m - Diopter adjustment: +/- 4 - Exit pupil: 3.2 mm - Eye relief: 12 mm - Field of view: 5.6° - Apparent field of view: 56° - Roof prism design - Glass type: BaK-4 - Interpupillary distance: 5676 mm - Twilight factor: