The World's First LED Digital Watch The Hamilton/Pulsar was the first LED solid state digital watch. It is well documented in history through the US Patent office and the Smithsonian Institution. The Seiko Watch Co. purchased the Pulsar name and owns all legal rights to the name. Any mention of the Pulsar name in reference to watches in this listing is solely in respect to the old original Pulsar LED watches that were manufactured by Time Computer, Inc. before the name was sold. The Date Command was the first Pulsar month-and-date model. It was introduced in 1973 Displays hour, minute, second, month, date, has AM/PM indicators - Accurate to within 60 seconds a year - "Smart Calendar" knows the difference between 30 and 31 day month and changes automatically. February is programmed for 29 days, so no adjustment is required in leap year. In other years, change date only on March 1st. *Setting Instructions Included* Specifications: Brand: Pulsar Time Computer Model: P3 Date Command Serial #: 173002 Year of Production: 1973 Reference #: 3386 Gender: Men or Women Case Material: 14k Gold Filled Case Diameter: 38mm, not counting push buttons Strap Material: Genuine Leather Strap Specifications: Original Pulsar brown leather strap will fit a wrist up to 7.5" Display Screen Color: Red Display Screen Condition: Original red mineralite glass time screen is clean Movement: Upgraded SASM27 Module runs strong and accurate Box/Papers: No original box or papers Overall Condition: mint condition ~ upgraded SASM27 Module runs strong and accurate ~ original signed red mineralite glass time screen is clean ~ all functions working properly ~ no damage ~ all of our watches have been tested and serviced if needed ~ stunning