The Tissot Seastar 2000 Powermatic 80 features a 44 mm black PVD-coated 316L stainless steel case with a notched edge and a scratch-resistant ceramic bezel ring. Engineered to meet the ISO 6425:2018 diving watch standard, it incorporates a built-in helium escape valve designed for professional saturation diving.

Powered by a Swiss automatic Powermatic 80 movement, this timepiece delivers up to 80 hours of power reserve and includes a patented Nivachron balance spring for enhanced magnetic field resistance. Super-LumiNova coating on the hands and hour markers ensures clear legibility against the gradient dial in low-light environments.

Rated water-resistant up to 60 bar (600 m), the watch is fitted with a screw-down crown, screw-down caseback, and a sapphire crystal with an antireflective bottom coating. An interchangeable quick-release black rubber strap allows for easy, tool-free customization.

Key Features

Collection	Sport
Weight	130 g
Case Length	44 mm
Case Width	44 mm
Case Thickness	15.3 mm
Case Lug Width	22 mm
Water Resistance	60 bar (600 m / 2000 ft)
Case Material	316L stainless steel & PVD coating
Bezel Material	316L stainless steel with ceramic
Crystal	Sapphire with antireflective bottom coating
Movement	Swiss automatic
Power Reserve	80 hours
Dial Colour	Grey gradient
Strap Material	Rubber
Strap Colour	Black

Highlights

Swiss automatic Powermatic 80 movement with up to 80 hours of power reserve
Water-resistant up to 60 bar (600 m) with an integrated helium escape valve
Certified according to ISO 6425:2018 diving watch standards
Durable 316L stainless steel case with black PVD coating and ceramic bezel
Super-LumiNova coated hands and markers for enhanced low-light legibility
Interchangeable quick-release black rubber strap

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Frequently asked questions

What is the water resistance rating of this watch?

It is water-resistant up to a pressure of 60 bar (600 m / 2,000 ft).

What type of movement powers the timepiece?

It is powered by a Swiss automatic Powermatic 80 movement with an 80-hour power reserve.

Does the watch have a helium escape valve?

Yes, it is equipped with an integrated helium escape valve designed for saturation diving.

What material is used for the bezel?

The bezel is constructed from 316L stainless steel with a scratch-resistant ceramic ring.

Is the watch certified for professional diving?

Yes, it is certified according to the ISO 6425:2018 diving watch standard.

Can the strap be changed without tools?

Yes, it features an interchangeable quick-release strap system.

Tissot Seastar 44mm Men's Watch T120.907.37.051.00