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The Encyclopedia of Horology

Wristwatch · Diving watch

DOXA Sub 300 Divingstar

Partially verified

The DOXA Sub 300 Divingstar is a stainless steel diving wristwatch featuring a tonneau-shaped case measuring 42.5mm in diameter. The watch is equipped with a luminous saturated yellow dial, a matching handset, and a box-shaped sapphire crystal. It utilizes a unidirectional rotating bezel that incorporates a no-decompression dive timing scale. The timepiece is powered by an automatic movement that holds a 38-hour power reserve and is COSC-certified. The watch is mounted on a stainless steel beads-of-rice bracelet that includes a signed folding clasp with a wetsuit extension. Water-resistant to 300m, this instrument is designed for professional and amateur diving applications. Its aesthetic and functional characteristics follow the design language established by the first generation of Doxa Sub models introduced in 1967.

Frontal view of the Doxa Sub 300 Divingstar featuring a yellow dial and beads-of-rice bracelet.
Frontal view of the Doxa Sub 300 Divingstar featuring a yellow dial and beads-of-rice bracelet. — Analog:Shift. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
shop.analogshift.com
Category
Wristwatch · Diving watch
Maker / attribution
DOXA
Reference
AS10270
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
Modern
Source-reported place
Not established

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

Case and Dial

The Doxa Sub 300 Divingstar is constructed with a tonneau-shaped stainless steel case measuring 42.5mm. It is fitted with a box-shaped sapphire crystal and a signed crown. The watch features a unidirectional dive bezel, which includes the U.S. Navy no-decompression dive timing marks.

The dial is rendered in a saturated yellow finish with a matching handset. A date window is positioned at the 3 o'clock index. The overall construction is designed for use in water, with a rated depth of 300m.

Evidence for this section
  • “Preserving the classic 42.5mm diameter of the original Subs, it features a box-shaped sapphire crystal, a signed crown, a unidirectional dive bezel with no-deco scale, a luminous saturated yellow dial with a matching handset”

Movement and Functionality

The timepiece is driven by an automatic movement that is COSC-certified. This movement provides a power reserve of 38 hours.

The watch is designed as a functional tool for divers, incorporating features established in the 1967 model generation. These include the unidirectional bezel for timing dives and a high level of water resistance for use in underwater environments.

Evidence for this section
  • “Powered by a COSC-certified automatic movement with a 38-hour power reserve, this piece is waterproof to a whopping 300m”
  • “the unidirectional bezel with the U.S. Navy's no-decompression dive timing marks”

Bracelet and Appointments

The watch is attached to a stainless steel beads-of-rice bracelet. This bracelet includes a folding clasp that is signed by the manufacturer.

The bracelet also features a dedicated wetsuit extension to accommodate use over diving equipment, aligning with the watch's stated purpose as a professional and amateur diving instrument.

Evidence for this section
  • “a stainless steel beads-of-rice bracelet with a signed folding clasp and a wetsuit extension”

Open research questions

  • What is the specific production year of this watch?
  • What is the specific caliber designation for this COSC-certified automatic movement?

Source evidence

Recorded claims and source quotations for DOXA Sub 300 Divingstar
FieldSource-reported valueSource quotation
MakerDOXA“Vendor: DOXA”
ModelSub 300 Divingstar“DOXA Sub 300 Divingstar”
Case diameter42.5mm“Preserving the classic 42.5mm diameter of the original Subs”
Water resistance300m“waterproof to a whopping 300m”
Movement certificationCOSC-certified“Powered by a COSC-certified automatic movement”
Power reserve38-hour“38-hour power reserve”
Bracelet typeStainless steel beads-of-rice“stainless steel beads-of-rice bracelet”
Case shapeTonneau“ergonomic, tonneau-shaped case profile”

Visible details

  • Saturated yellow dial with date window at 3 o'clock
  • Unidirectional bezel with U.S. Navy no-decompression markings
  • Stainless steel 'beads-of-rice' bracelet with folding clasp
  • Tonneau-shaped case profile

Research qualifications

  • Does not specify the exact manufacturing year of this individual watch
  • Power reserve and waterproof rating provided by the source without independent verification

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

Consulted source

ساعت مچی غواصی DOXA Sub 300 Divingstar

Reviewed 2026-11-02 · Record a20155b8f8

Terms in this record

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

Other diving watch records