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Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic
Case
- Diameter
- 46mm
- Thickness
- 18mm
- Lug-to-lug
- 55mm
- Lug width
- 22mm
- Material
- 316L Stainless Steel (Anthracite IP)
- Water resistance
- 300m
Crystal & dial
- Crystal
- Sapphire
- Dial colour
- Anthracite
Movement
- Caliber
- Sellita SW220-1
- Type
- Automatic
- Hacking
- No
- Hand-winding
- No
- Complications
- Time only
Sellita
Sellita's day-date automatic caliber, the equivalent of the ETA 2834-2. Adds day and date complications to the proven SW200-1 base architecture while maintaining the same 28,800 vph beat rate and 38-hour power reserve. The additional 0.45mm of height over the SW200-1 accommodates the day display mechanism. A reliable workhorse for brands needing a day-date Swiss automatic at competitive pricing.
Design language
- Case shape
- round
- Dial style
- matte
- Bezel
- rotating
- Bracelet
- rubber
- Hands
- baton
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Owners widely praise the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic as a tough, underrated tool watch with lifestyle appeal, highlighting its robust build and tritium lume for excellent legibility. However, its 46mm size is a common criticism, with some finding it heavy and top-heavy, and the OEM rubber strap stiff. One owner noted the watch runs about 10 seconds fast after three days, and the ETA 2836-2 movement offers approximately two days of power reserve. On balance, owners and reviewers rate the Marathon JDD (Jumbo Day/Date) Anthracite Diver's Automatic highly for its robust tool-watch build and legibility, despite its substantial size.
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