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The Encyclopedia of Horology

Wristwatch · Digital led wristwatch

Vintage Pulsar P4 Classic LED Digital Wristwatch

Partially verified

This vintage Pulsar P4 Classic LED wristwatch dates to the 1970s. Encased in a brushed stainless steel case measuring 37.1 mm by 35.5 mm with a thickness of 14 mm, the watch operates on a battery-powered quartz movement driving a red LED display. The screen reveals hours and minutes upon pressing the bottom button, with seconds displayed on a second press, while the top button reveals the day and date indicator. The case back is marked 'The computer INC. U.S.A.', 'Stainless Steel', 'Swiss Case', and bears serial number 580700. It is fitted with an original stainless steel bracelet.

Front view of the Pulsar P4 digital wristwatch showing the brushed steel case, bracelet, and red LED time display reading 1:22
Front view of the Pulsar P4 digital wristwatch showing the brushed steel case, bracelet, and red LED time display reading 1:22 — SECOND HAND HOROLOGY. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
secondhandhorology.com
Category
Wristwatch · Digital led wristwatch
Maker / attribution
Pulsar
Reference
3310
Catalogue / lot identifier
WA-4449
Source-reported date
1970's
Country
Not established
Source-reported serial
580700

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Object Identification

The subject is identified as a vintage Pulsar P4 Classic LED wristwatch, dated by the source to the 1970s. The watch features a brushed stainless steel case and is accompanied by an original stainless steel bracelet.

The case back includes the markings 'PULSAR', 'The computer INC. U.S.A.', 'Stainless Steel', 'Swiss Case', and the serial number '580700'.

Evidence for this section
  • “vintage Pulsar P4 Classic LED Wristwatch, dated from the 1970's”
  • “Case Markings: PULSAR The computer INC. U.S.A. Stainless Steel Swiss Case 580700”
  • “The original Pulsar silver-tone stainless steel bracelet”

Display and Controls

The watch operates via a quartz battery movement powering a red LED display. The interface is controlled by two push buttons located on the top and bottom of the case.

The display shows hours and minutes when the bottom button is pressed, with seconds visible upon a second press. The top button is used to access the day and date functions.

Evidence for this section
  • “It features a quartz battery movement with a striking red LED”
  • “The LED display shows hours and minutes with a press of the bottom button, and seconds with a second press. The top button reveals the day and date.”

Physical Measurements

The case dimensions are recorded as 37.1 mm by 35.5 mm, with a thickness of 14 mm. Including the button, the case width is 37.6 mm, and the lug-to-lug measurement is 40.7 mm.

The watch features a lug width of 11 mm and a band width of 21 mm. The provided bracelet is stated to accommodate wrist sizes up to 7 inches (17.8 cm).

Evidence for this section
  • “Measurements (mm): Case 37.1x35.5 Case w/Button 37.6 Case Lug to Lug 40.7 Case Thickness 14 Lug Width 11 Band Width 21”
  • “The original Pulsar silver-tone stainless steel bracelet fits wrists up to 7 inches (17.8 cm).”

Open research questions

  • Does the physical module within serial 580700 correspond to the 402 module or an earlier variant?
  • Does the watch retain the mercury-switch 'flick-wrist' activation feature?

Source evidence

Recorded claims and source quotations for Vintage Pulsar P4 Classic LED Digital Wristwatch
FieldSource-reported valueSource quotation
Case measurements37.1 x 35.5 mm (14 mm thickness, 40.7 mm lug to lug)“Case 37.1x35.5 Case w/Button 37.6 Case Lug to Lug 40.7 Case Thickness 14”
Movement typeQuartz battery movement“It features a quartz battery movement with a striking red LED”
Case back markingPULSAR The computer INC. U.S.A. Stainless Steel Swiss Case 580700“Case Markings: PULSAR The computer INC. U.S.A. Stainless Steel Swiss Case 580700”
Display functionHours, minutes, seconds, day, and date via red LED“The LED display shows hours and minutes with a press of the bottom button, and seconds with a second press. The top button reveals the day and date.”
Reference Number3310“Vintage PULSAR P4 Classic LED Digital Watch 3310”

Visible details

  • Cushion-shaped brushed stainless steel case with integrated link bracelet
  • Dark crystal displaying illuminated red seven-segment digital characters '1:22'
  • Pulsar brand signature printed in white near the lower edge of the display window

Research qualifications

  • Internal movement caliber number is not shown in the visible images.
  • Country of final assembly is ambiguous between the Swiss case marking and U.S.A. company inscription.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Vintage PULSAR P4 Classic LED Digital Watch 3310 Day Indicator Wristwa – SECOND HAND HOROLOGY

Reviewed 2026-10-25 · Record c1bda5a51f

Terms in this record

Glossary explanations for terms named in this object’s record.