DESC: BT70 makes it even more rewarding. It's a true binocular telescope, with optical quality and features you'd expect of a fine astronomical instrument.Included 20-power eyepieces deliver a 63-degree apparent field of view. Optional 25x or 16x interchangeable eyepieces let you vary the magnification for deep-sky, wide-field solar system, and terrestrial viewing - with 3D-like depth of field! Sturdy all-metal body design has retractable lens shades, removable carrying handle, and metal objective lens caps.