Tissot Gives the Seastar 2000 Professional a More Wearable 44mm Case

Tissot has refreshed the Seastar 2000 Professional with the sort of update that matters on the wrist, not just on a spec sheet.

The professional diver now moves to a 44mm case, down from the earlier 46mm format, while keeping the serious hardware that made the model stand out in its price range.

Fresh dial colours bring the visual lift, but the more compact case and revised bracelet clasp may be the changes owners notice most.

At a glance

A smaller case without softer dive credentials

The key change is the move from 46mm to 44mm, a modest-sounding reduction that should make the Seastar 2000 Professional noticeably easier to live with.

At 15.29mm thick, it remains a substantial dive watch, but it’s now slimmer than the previous 16.25mm version.

Tissot hasn’t trimmed the specification to get there.

The watch remains ISO 6425 compliant, water-resistant to 600 metres, and fitted with a helium escape valve at 9 o’clock for saturation diving use.

The 316L stainless steel case uses alternating brushed and polished surfaces, with a screw-down crown protected by crown guards and a see-through caseback.

A steel unidirectional bezel with a ceramic insert frames the dial, complete with an engraved 60-minute scale for elapsed dive timing.

Orange, blue and stormy grey join the line-up

The new colourways give the Seastar 2000 Professional a broader personality than before.

Deep blue models are paired with a matching blue ceramic bezel insert, while the stormy grey and bright orange dials use black ceramic inserts for a sharper contrast.

The orange dial is the loudest move here, bringing a more energetic feel to a watch that has usually leaned into traditional dive-watch shades.

Across the collection, the engraved wave-pattern dial remains a central Seastar signature.

Large baton hands and applied indexes are filled with Super-LumiNova, with a green glow for low-light legibility.

Tissot is also offering two black-coated steel versions, giving the refreshed collection a more technical and stealthy option alongside the standard steel cases.

The Powermatic 80 still does the heavy lifting

Inside is the Powermatic 80 calibre, listed as the ETA C07.111, an automatic movement that has become one of Tissot’s strongest assets in this segment.

It runs at 21,600 vibrations per hour and delivers up to 80 hours of power reserve, which gives it real weekend-off practicality.

The movement also uses a Nivachron balance spring, designed to improve resistance to magnetism.

Functions are straightforward and useful, with hours, minutes, hacking seconds and a date window positioned at 6 o’clock.

Bracelet and strap updates for easier daily use

The new diver clasp is a practical upgrade rather than a headline grabber.

It adds a security lock and push-button extension, making adjustment easier when the watch moves over a wetsuit or needs a quick comfort tweak during the day.

The steel bracelet includes a micro-adjustment system, while rubber-strap models use a tropic-style strap in blue or black depending on the reference.

Tissot’s interchangeable strap system also remains part of the package, so owners can move between bracelet and rubber without turning the change into a workshop task.

Details & Specifications

The refreshed Seastar 2000 Professional keeps the model’s strongest argument intact.

It’s still a properly equipped, high-depth-rated Swiss diver at a comparatively approachable price, but the new 44mm case makes it easier to see as a watch for regular wear rather than only a maximum-spec tool for the water.