Sky-Watcher Binoviewer with Case and x2 Barlow Lens.

Designed to fit into a standard 1.25" eyepiece tube. This binocular attachment features high quality BaK-4 prisms for clearer, sharper images. An excellent accessory which helps to reduce eyestrain. A x2 specially-designed Barlow Lens is included which effectively doubles the magnification of eyepieces used. Supplied in Aluminium Case.