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The Encyclopedia of Horology

Wristwatch · Chronograph

Seiko 'Pepsi' Speedtimer Wristwatch

Partially verified

This Seiko 'Pepsi' Speedtimer is a chronograph wristwatch featuring a stainless steel case and bracelet. The dial is black with applied indices, luminescent hands, a single sub-dial at the six o'clock position, and a day-date display window at the three o'clock position. The bezel features a red and blue tachymeter scale, commonly referred to as the 'Pepsi' colorway. The dial bears the text 'Seiko', 'Speed-Timer', 'Sports', 'Water 70 Proof', and '21J'. The source indicates that the object is currently in a pre-preview stage, and specific technical information, such as the exact movement caliber or production dimensions, remains undisclosed within the provided documentation. It is listed as a pre-sale item, with further details available only through direct inquiry with the vendor.

Front view of the Seiko 'Pepsi' Speedtimer wristwatch showing the tachymeter bezel, dial layout, and integrated steel bracelet.
Front view of the Seiko 'Pepsi' Speedtimer wristwatch showing the tachymeter bezel, dial layout, and integrated steel bracelet. — Zamanito. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
zamanito.com
Category
Wristwatch · Chronograph
Maker / attribution
Seiko
Reference
Not recorded
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
1970s (based on 'Water 70 Proof' dial text and reference 6139)
Source-reported place
Japan

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

Dial and Bezel Features

The watch features a prominent tachymeter bezel with a distinct red and blue color scheme. The dial surface is black and includes applied hour markers, with a sub-dial positioned at the bottom of the dial for chronograph functions. Hands are present for hours, minutes, and the chronograph center-seconds.

A rectangular window at the three o'clock position displays the day of the week, shown in Japanese kanji, alongside the numerical date. Printed text on the dial confirms the brand as 'Seiko', includes the 'Speed-Timer' model designation, and notes 'Sports' and 'Water 70 Proof' specifications, with a '21J' indicator for the movement jewel count.

Evidence for this section
  • “ساعت مچی Seiko 'Pepsi' Speedtimer”
  • “این ساعت در حال حاضر در مرحله پیش‌نمایش قرار دارد”

Case and Bracelet Construction

The timepiece is housed in a stainless steel case with a polished and brushed finish. The right side of the case integrates the crown and two pushers for the chronograph operation. The watch is attached to a stainless steel bracelet, which appears to be of an integrated design featuring multiple rectangular links.

The case back and internal technical components remain undocumented by the source. Consequently, exact measurements such as case diameter and depth are not confirmed, and the source specifies that all technical data is subject to direct inquiry by potential purchasers.

Evidence for this section
  • “این رویکرد به خریداران اجازه می‌دهد تا پیش از عرضه رسمی، از موجودی‌های آتی مطلع شوند”
  • “تمامی جزئیات مربوط به مشخصات فنی، سال ساخت و تاریخچه این مدل در حال حاضر نامشخص است”

Cataloguing and Sale Context

The source clarifies that the provided information is a summary rather than a formal catalogue entry, and it emphasizes that the data is limited to the current pre-sale status.

The listing serves to facilitate contact between the seller and interested parties. There is no assertion of authenticity or exhaustive provenance provided in the documentation, and the user is directed to engage with the support team for all inquiries regarding the object's history and mechanics.

Evidence for this section
  • “این قطعه بخشی از مجموعه «First Look» است”
  • “هیچ ادعایی مبنی بر اصالت یا ویژگی‌های فنی خاص این مدل در متن ارائه شده وجود ندارد”

Open research questions

  • What is the specific movement caliber powering this Speedtimer model?
  • What are the exact case dimensions and manufacturing date range for this specific reference?

Source evidence

Recorded claims and source quotations for Seiko 'Pepsi' Speedtimer Wristwatch
FieldSource-reported valueSource quotation
MakerSeiko“برند: Seiko”
ModelSpeedtimer“مدل: Speedtimer”
StatusIn anticipation of release“وضعیت: در انتظار عرضه”
Inquiry MethodDirect contact through form“نیاز به استعلام مستقیم برای جزئیات”
Collection ContextFirst Look“بخشی از مجموعه «First Look» است”

Visible details

  • Bi-color red and blue tachymeter bezel insert
  • Integrated steel link bracelet
  • Day-date complication with Japanese and numeric display
  • Single chronograph sub-register at six o'clock

Research qualifications

  • Technical specifications such as movement caliber and case dimensions are unconfirmed by the source
  • The production date is not provided in the documentation

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

Consulted source

ساعت مچی Seiko 'Pepsi' Speedtimer

Reviewed 2026-11-02 · Record 1e971669a8

Terms in this record

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

Other chronograph records