Doxa is one of the most distinctive dive watch brands in modern horology, known for its cushion-shaped cases, bold dial colors, and a strong focus on functional diving design.
Unlike many luxury sports brands, Doxa keeps its sizing relatively consistent across the lineup, with most models centered around classic tool-watch proportions rather than fashion-driven scaling.
Below is a structured breakdown of the key collections and how they actually wear.
SUB 300
The most iconic Doxa model and the foundation of the brand’s modern identity.
SUB 300 42.5mm
- Case size: 42.5mm
- Thickness: ~13.4mm
- Lug width: 20mm
- Water resistance: 300m
- Crystal: Sapphire
- Case style: Cushion-shaped professional diver case
Despite the 42.5mm diameter, the cushion case and short lugs make it wear more compact than expected on wrist.
The wide bezel and dial color options also increase legibility without making the watch feel overly bulky.
SUB 300T
A slightly more technical and tool-oriented evolution of the SUB 300.
SUB 300T 42.5mm
- Case size: 42.5mm
- Thickness: ~14.0mm+ depending on version
- Lug width: 20mm
- Water resistance: 1200m
- Crystal: Sapphire
- Case style: Heavy-duty professional dive case
The SUB 300T introduces significantly increased depth rating, which adds visual and physical heft, especially in case thickness.
It retains the same cushion profile but feels more tool-focused and substantial on wrist.
SUB 600T
A more angular, aggressive interpretation of the Doxa dive design.
SUB 600T 40mm–42.5mm (depending on model)
- Case size: 40mm to 42.5mm
- Thickness: ~14mm to 15mm
- Lug width: 20mm
- Water resistance: 600m
- Crystal: Sapphire
- Case style: Angular cushion diver with reinforced geometry
The SUB 600T has a more structured case design, making it wear slightly larger than the SUB 300 despite similar sizing.
The added water resistance rating contributes to a thicker, more industrial wrist presence.
SUB 200 / SUB 200 T.GRAPH
A more accessible and vintage-inspired entry into the Doxa dive lineup.
SUB 200 42mm
- Case size: 42mm
- Thickness: ~14mm
- Lug width: 18mm–20mm depending on strap
- Water resistance: 200m
- Crystal: Sapphire
- Case style: Classic diver with vintage proportions
SUB 200 T.GRAPH 43mm
- Case size: 43mm
- Thickness: ~17mm
- Lug width: 20mm
- Water resistance: 200m
- Crystal: Sapphire
- Case style: Chronograph diver
The T.GRAPH chronograph significantly increases thickness and wrist presence, making it one of the most visually dominant pieces in the Doxa catalog.
Key Pattern Across Doxa
Across the full lineup, a few consistent traits stand out:
- Cushion-shaped cases are standard across most models
- Case size is consistent (mostly 40mm–42.5mm range)
- Short lugs help control wrist presence despite wide cases
- Thickness increases noticeably with depth rating and complications
- Strong emphasis on functional dive watch design over dress versatility
The Bottom Line
Doxa watches wear more comfortably than their specifications suggest, largely due to their cushion case design and short lug structure.
While the numbers often sit in the 42mm range, real-world wrist presence feels more controlled and compact than traditional round-case dive watches of similar size.