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Here is a vintage ca. 1977 PULSAR calculator watch in stainless steel with the original box, papers and setting pen. The calculator can be activated by pressing the ” ” button with the original retractable tipped pen. Only use the pen when pressing the buttons-no other object. The size of calculator/watch case 36 x 43 x 15 mm (1.4″ x 1.7″ x 0.6″). This PULSAR is absolutely pristine and a rare to find so complete!