Macrobinoculars

Macrobinoculars were hand held electronic viewing devices used to enhance binocular vision. Also referred to as electrobinoculars, they possessed the ability to telescopically enhance items within the viewfinder and were capable of magnifying images several thousands times in relation to distance. Some models of macrobinoculars, such as the MB450 Macrobinoculars, were able to perceive images taking place in outer space. This sophisticated device displayed images with an overlay of computerized information detailing the object's distance, relative and true azimuths, and elevation.

History
In 22 BBY, Jedi Knight Obi-Wan Kenobi used a pair of macrobinoculars to spy on events taking place on Geonosis.

On Tatooine in 0 BBY, Luke Skywalker possessed a pair of the MB450 Macrobinoculars. He used them to view the battle between the Imperial Star Destroyer Devastator and the Blockade Runner Tantive IV which was taking place outside the planetary atmosphere. That same day, Luke lent his macrobinoculars to friend Biggs Darklighter, so he too could witness the spectacle. The following day, Luke used them again to track down his runaway droid R2-D2.