DOXA dates the SUB concept to 1967, and the modern SUB 300 still makes its diving purpose visible in its bezel, compact case proportions and distinctive color options. The historical record and current specifications are different things: DOXA’s origin story is a brand retrospective, while the modern Professional’s movement, materials and water resistance belong to today’s model listing.
Why the DOXA SUB 300 became a recognizable dive-watch design
The SUB 300’s identity is tied to making dive-specific functions part of the watch’s visual design. DOXA says its SUB concept was launched in 1967 as a purpose-designed diver’s watch intended to be accessible to a broader public. The company describes it as “the first truly purpose-designed diver’s watch accessible to a broader public”; that “first” is DOXA’s characterization, not an independently established consensus.
An independent historical overview places the 1967 SUB 300 among the notable dive watches of the decade and describes the original Professional configuration as having an orange dial. It also associates DOXA’s North American presence with US Divers. These details offer useful historical context, but they are not a substitute for launch-era primary documentation.
What the historical record establishes—and what it does not
DOXA’s official history dates the SUB concept to 1967 and calls the watch a milestone in dive-watch history. Those are the manufacturer’s retrospective claims. The available historical account does not independently establish every launch detail: original DOXA catalogs, launch advertisements and archival technical documents are not cited here.
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- Cool Automatic Watch: Scratch resistant sapphire crystal glass with anti-reflective coating on inner surface; Stainless steel bracelet is adjustable by removing or adding links and fold over clasp with safety. A must have tactical frog watch for collection.
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One distinction matters when tracing the line’s technical history: DOXA says the SUB 300T Conquistador arrived in 1968 as one of the first dive watches equipped with a helium escape valve. That is a claim about the 300T, not the SUB 300, and it comes from DOXA’s own retrospective.
How the SUB 300’s bezel is meant to work
The modern SUB 300 has a unidirectional rotating bezel carrying dive-time minutes and a depth scale in meters. DOXA says these scales are intended to help divers calculate no-stop decompression dive times. The bezel is a timing aid, not a replacement for dive training, a dive computer or other safety procedures.
The bezel is one of the clearest links between the watch’s functional identity and its appearance. Rather than treating the SUB 300 as simply a modern sports watch with a historical name, DOXA presents its scale and rotating bezel as tools for diving.
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- Solar-Powered – Charges efficiently under sunlight or indoor light; no battery replacement needed for years. Fully charged, it runs up to 6 months in total darkness.
- 300M (1000FT) Professional Dive Watch – Designed for serious divers, swimming, snorkeling, and water sports. Superior water resistance
- Durable 316L Stainless Steel – Features a 45.8mm solid 316L steel case & bracelet (24mm width) for extreme durability. Scratch-resistant and corrosion-proof.-（With 1 set silicone spare strap）
- Reliable Quartz Movement – High-precision Japanese quartz movement ensures accurate timekeeping.
- Long-Lasting Battery – Equipped with a Maxell ML2016 rechargeable battery (replaceable after years of use). Weight: 131g (0.29LB) – Sturdy yet comfortable.
How the modern SUB 300 carries the design forward
Heritage styling, current materials
On the current SUB 300 Professional listing, DOXA describes a domed, scratch-resistant sapphire crystal with anti-reflective treatment. The company says the dome echoes the shape of the plexiglass used on the 1967 original: a historical form translated into a contemporary material.
Colors and configurations
DOXA lists the current SUB 300 in multiple dial colors, with configurations that include a beads-of-rice stainless-steel bracelet or a rubber strap. The product page also describes wetsuit extensions on the clasps. Exact colors and strap choices can vary by reference and region, so check the relevant listing before choosing a configuration.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Current SUB 300 specifications are model-specific
The following figures describe current products in DOXA’s listings, not every vintage SUB 300. The Professional listing describes a stainless-steel, Swiss automatic, self-winding, COSC-certified chronometer with a 38-hour power reserve and a frequency of 28,800 vibrations per hour (4 Hz). It gives the watch a water-resistance rating of 300 meters.
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- Stainless Steel case with Black Resin Band
- Black Dial with date window at 3 O'clock
- Luminous markers and hour hands; sweep second hand
- Anti-reverse bezel
- Water-resistant to 200 M (660 feet)
DOXA’s Divingstar listing gives that specific model a case measuring 42.50 mm by 45.00 mm and 13.40 mm high, with water resistance rated at 30 ATM, 300 meters or 984 feet. Those dimensions should not be applied to other SUB generations or references.
| Current listing | Published details | Scope |
|---|---|---|
| SUB 300 Professional | Swiss automatic, self-winding, COSC-certified chronometer; 38-hour power reserve; 28,800 vibrations per hour (4 Hz); stainless steel; 300-meter water resistance | Specifications on DOXA’s current Professional product listing |
| SUB 300 Divingstar | 42.50 mm by 45.00 mm case; 13.40 mm height; 30 ATM / 300 meters / 984 feet water resistance | Measurements and rating on the specific Divingstar listing |
What makes the DOXA SUB 300 special?
Its appeal comes from the combination of a purpose-built dive-watch identity, a distinctive bezel with diving scales, and a visual design that DOXA connects to the 1967 original. The current model preserves selected cues—such as a domed crystal—while using contemporary materials and movement specifications. Keeping those strands separate makes the watch’s history clearer: the brand supplies the 1967 origin framing, secondary history adds context, and modern product pages define what a current reference offers.
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