Pulsar Calculator Watch

Pulsar Calculator Watch

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Following on its success with the first commercially successful digital quartz watch on the market in 1972, Time Computer Inc. (a descendant of Hamilton Watch Co., Lancaster, PA) put their calculator watch on the market in time for Christmas sales in 1975. The first models featured 18K gold cases and sold for $3950. By spring of 1976, a stainless steel model like this one was available for about $500.
Company literature claimed the watch to be accurate to about a minute a year. The six-digit display could show time of hour, minute and second; plus month and day. Tapping the 0 key converted the watch from time mode to calculator mode, and tapping the command button returned it to time mode. The calculator watch has a six-digit display, but the ability to calculate to 12 digits. The watch came with a stylus to press the calculator’s keys. Four silver oxide batteries provided power.
Object Name
wrist watch, calculator, pulsar
wrist watch, calculator watch, pulsar
date made
Physical Description
Stainless steel (case material)
overall: 9 1/8 in x 1 1/2 in x 1/2 in; 23.1775 cm x 3.81 cm x 1.27 cm
overall - face: 1 1/4 in x 1 1/2 in x 1/2 in; 3.175 cm x 3.81 cm x 1.27 cm
ID Number
catalog number
accession number
See more items in
Work and Industry: Mechanisms
Measuring & Mapping
My Computing Device
Exhibition Location
National Museum of American History
Data Source
National Museum of American History
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