Tissot Seastar Powermatic 80 44mm Grey
The Tissot Seastar Powermatic 80 44mm Grey is a formidable Swiss automatic diving watch that combines professional-level aquatic capability with the mechanical sophistication of Tissot’s celebrated Powermatic 80 movement. Built around a substantial 44 mm case and distinguished by its grey gradient dial, this Seastar 2000 delivers a powerful combination of technical performance, modern materials and unmistakable sporting character.
At its heart is a Swiss automatic Powermatic 80 movement, offering an impressive power reserve of up to 80 hours. Tissot also equips the movement with its patented Nivachron™ balance spring, providing improved resistance to magnetic influences encountered in modern everyday environments.
The Tissot Seastar Powermatic 80 44mm Grey goes considerably beyond the specifications of a conventional sports watch. Its construction provides water resistance to an exceptional 60 bar / 600 metres / 2000 feet, supported by a screw-down crown and caseback.
A helium escape valve further reinforces its serious diving credentials, while the anti-clockwise rotating bezel with ceramic ring provides the durability and elapsed-time functionality expected from a high-performance aquatic watch. These specifications are confirmed by Tissot for reference T120.907.11.051.00.
Discover more professional-inspired Swiss diving watches in our Tissot Seastar Collection.
Powerful 44mm Seastar Design
The Tissot Seastar Powermatic 80 44mm Grey has been designed to make a strong statement on the wrist.
Its round 44 mm case combines 316L stainless steel and ceramic elements, creating a construction that feels substantial, purposeful and unmistakably sporty.
At 15.29 mm thick, this is not intended to be an understated dress watch. Instead, its proportions reflect the serious water resistance and mechanical architecture contained within the case.
Tissot has nevertheless refined the contemporary Seastar 2000 design with details intended to create a more compact and sophisticated visual appearance despite its impressive dimensions.
The result is a high-performance Swiss sports watch that feels appropriately robust without losing the premium finishing associated with Tissot.
Grey Gradient Dial
The distinctive grey gradient dial is one of the defining visual characteristics of the Tissot Seastar Powermatic 80 44mm Grey.
Rather than using a completely uniform surface, the gradient treatment introduces additional depth and character, giving the dial a more dynamic appearance as lighting conditions change.
Tissot combines this sophisticated colour treatment with highly legible hands and indexes.
Super-LumiNova® is used to provide visibility when ambient light falls, reinforcing the functional diving character of the watch.
A practical date indication adds everyday functionality without overwhelming the sporty dial architecture.
The combination of grey tones, steel construction and ceramic detailing gives this Seastar a more technical and contemporary character than traditional blue diving watches.
Powermatic 80 Automatic Movement
Inside the Tissot Seastar Powermatic 80 44mm Grey beats a Swiss automatic Powermatic 80 movement.
The movement is mechanically powered through the motion of the wearer’s wrist, eliminating the need for the conventional battery used by quartz watches.
Its most important practical advantage is its impressive power reserve of up to 80 hours.
When fully wound, the watch can therefore continue operating for more than three days without being worn.
This makes the Tissot Seastar Powermatic 80 44mm Grey especially convenient for someone who rotates between several watches or removes the watch during a weekend.
Tissot officially specifies the movement with an 80-hour reserve, date function and patented Nivachron™ balance spring.
Explore more mechanical Swiss watches featuring a Swiss Powermatic 80 Movement.
Nivachron™ Balance Spring
The Powermatic 80 movement inside the Tissot Seastar Powermatic 80 44mm Grey incorporates Tissot’s patented Nivachron™ balance spring.
Mechanical movements can be affected by magnetic fields generated by objects encountered in everyday life.
Nivachron™ technology is designed to provide improved resistance against these magnetic influences, contributing to the practical reliability expected from a modern mechanical watch.
Combined with the extended 80-hour power reserve, this technology makes the Seastar particularly appealing to someone who wants traditional Swiss mechanical watchmaking without sacrificing modern engineering.
Ceramic Diving Bezel
A major technical feature of the Tissot Seastar Powermatic 80 44mm Grey is its ceramic bezel ring.
Ceramic provides excellent resistance to scratching and helps the bezel maintain its appearance during prolonged active use.
The bezel rotates anti-clockwise, following the traditional unidirectional configuration associated with diving watches.
This construction allows elapsed time to be monitored while reducing the possibility of accidentally extending a measured diving interval.
The ceramic element also provides a premium visual contrast against the stainless-steel architecture of the case.
Sapphire Crystal
Protecting the grey gradient dial is a scratch-resistant sapphire crystal.
Tissot applies an antireflective coating to the underside of the crystal, helping reduce distracting reflections while preserving the durability of the sapphire surface.
This combination is especially appropriate for the Tissot Seastar Powermatic 80 44mm Grey, where excellent readability and physical durability are essential parts of the design.
Together with the ceramic bezel and robust case construction, sapphire crystal contributes to a watch designed to withstand considerably more demanding conditions than a conventional everyday timepiece.
Helium Escape Valve
One of the features that distinguishes the Tissot Seastar Powermatic 80 44mm Grey from less specialised sports watches is its helium escape valve.
During saturation diving, extremely small helium particles can enter a watch case under prolonged high-pressure conditions.
During decompression, the helium escape valve is designed to allow accumulated helium to leave the case safely.
Its presence demonstrates the serious technical philosophy behind the Seastar 2000.
This isn’t simply a watch styled to resemble professional diving equipment—the architecture incorporates features developed specifically for demanding underwater environments. Tissot lists the helium valve among the official case features of this reference.
Stainless-Steel Bracelet
The Tissot Seastar Powermatic 80 44mm Grey is fitted with a robust stainless-steel bracelet that complements the substantial proportions of its 44 mm case.
Tissot incorporates an interchangeable quick-release system, making compatible strap changes more convenient.
The folding clasp includes a safety lock and diver extension, providing the secure fit expected from a serious aquatic sports watch.
The bracelet gives the watch a substantial wrist presence while maintaining the visual continuity of the steel case.
Exceptional 600m Water Resistance
The defining performance specification of the Tissot Seastar Powermatic 80 44mm Grey is its extraordinary 60 bar / 600 metres / 2000 feet water resistance.
That is double the 300 m rating of the Seastar 1000 model we just completed.
Tissot combines this substantial water resistance with a screw-down crown and caseback, anti-clockwise rotating bezel and helium escape valve.
These features establish the Seastar 2000 as a genuinely serious diving-oriented mechanical watch rather than merely a sports watch with aquatic styling.
Mechanical Performance Meets Professional Diving Capability
The Tissot Seastar Powermatic 80 44mm Grey brings together two distinct aspects of Swiss watchmaking.
On one side is mechanical sophistication: a Swiss automatic Powermatic 80 movement, up to 80 hours of reserve and patented Nivachron™ technology.
On the other is formidable aquatic engineering: 600 m water resistance, ceramic rotating bezel, screw-down construction, sapphire crystal and helium escape valve.
This combination gives the watch genuine technical credibility while maintaining the contemporary appearance expected from a premium Tissot sports watch.
A Serious Swiss Automatic Diving Watch
The Tissot Seastar Powermatic 80 44mm Grey is built for someone who wants considerably more than the appearance of a diving watch.
Its 44 mm proportions create commanding wrist presence, while the grey gradient dial adds a sophisticated contemporary identity.
The Powermatic 80 movement delivers impressive mechanical autonomy, Nivachron™ adds modern engineering, and sapphire crystal and ceramic provide excellent exterior durability.
Most importantly, its exceptional 600 m / 2000 ft water resistance, screw-down construction and helium escape valve establish genuine high-performance credentials.
For someone searching for a powerful Swiss automatic diving watch with serious engineering and exceptional mechanical performance, the Tissot Seastar Powermatic 80 44mm Grey represents one of the most technically capable options within the Seastar family.
Browse our complete selection of Swiss Made Tissot Watches and discover authentic Tissot timepieces for every style and occasion.
Who Is This Watch For?
The Tissot Seastar Powermatic 80 44mm Grey is designed for someone who wants a substantial Swiss automatic diving watch with specifications that go considerably beyond those of a conventional sports watch.
Its 44 mm stainless-steel case, grey gradient dial and ceramic bezel give the watch a powerful contemporary appearance, while the technical architecture underneath delivers genuine professional-inspired aquatic capability.
The Tissot Seastar Powermatic 80 44mm Grey is particularly compelling for mechanical-watch enthusiasts who also value serious durability. The Powermatic 80 automatic movement offers up to 80 hours of power reserve, while the patented Nivachron™ balance spring improves resistance to magnetic influences.
Most importantly, its exceptional 600 m / 2000 ft water resistance, helium escape valve, screw-down construction and unidirectional ceramic bezel separate the Seastar 2000 from ordinary sports watches.
For someone seeking a large, technically sophisticated and unmistakably purposeful Swiss automatic diver, this model offers an impressive combination.
Why Choose the Tissot Seastar Powermatic 80 44mm Grey?
The defining strength of the Tissot Seastar Powermatic 80 44mm Grey is the depth of its technical specification.
Inside is Tissot’s Swiss automatic Powermatic 80 movement, delivering an extended 80-hour power reserve. Nivachron™ technology adds another level of modern mechanical engineering by helping the movement resist magnetic influences encountered in everyday environments.
Externally, the watch is equally impressive.
Its scratch-resistant sapphire crystal protects the distinctive grey gradient dial, while a ceramic bezel ring offers excellent resistance to surface scratching.
The case is engineered for water resistance to an extraordinary 60 bar / 600 metres / 2000 feet and includes a screw-down crown, screw-down caseback and helium escape valve.
Together, these features make the Tissot Seastar Powermatic 80 44mm Grey one of the most technically capable mechanical watches in the Seastar range.
Why You’ll Love It
- Distinctive grey gradient dial
- Powerful 44 mm case
- Swiss automatic Powermatic 80 movement
- Up to 80 hours of power reserve
- Patented Nivachron™ balance spring
- 316L stainless-steel construction
- Ceramic bezel ring
- Anti-clockwise rotating bezel
- Scratch-resistant sapphire crystal
- Antireflective crystal treatment
- Super-LumiNova® visibility
- Practical date function
- Screw-down crown
- Screw-down caseback
- Helium escape valve
- See-through caseback
- Exceptional 600 m / 60 bar / 2000 ft water resistance
- Stainless-steel bracelet
- Interchangeable quick-release bracelet
- Folding clasp with safety lock
- Diver extension
- Swiss Made construction
- Exceptional professional-inspired diving capability
- Official 2-year Tissot warranty
Technical Specifications
- Reference / SKU: T120.907.11.051.00
- Collection: Seastar 2000
- Movement: Swiss Automatic
- Movement Family: Powermatic 80
- Power Reserve: Up to 80 Hours
- Balance Spring: Patented Nivachron™
- Functions: Hours, Minutes, Seconds, Date
- Case Shape: Round
- Case Material: 316L Stainless Steel
- Case Diameter / Width: 46 mm
- Case Length: 46 mm
- Case Thickness: 16.25 mm
- Lug Width: 22 mm
- Weight: 206 g
- Crown: Screw-down
- Caseback: Screw-down See-through Caseback
- Special Case Feature: Helium Escape Valve
- Bezel: Anti-clockwise Rotating
- Bezel Ring: Ceramic
- Crystal: Scratch-resistant Sapphire Crystal
- Crystal Treatment: Antireflective Coating
- Dial Colour: Grey Gradient
- Indexes: Index
- Luminescence: Super-LumiNova®
- Water Resistance: 60 bar / 600 m / 2000 ft
- Bracelet Material: Stainless Steel
- Bracelet Colour: Grey
- Bracelet System: Interchangeable Quick Release
- Clasp: Folding Clasp with Safety Lock and Diver Extension
- Country of Manufacture: Switzerland
- Warranty: 2 Years
⚠️ Σημαντικό: Στο Part 1 σου είχα δώσει 44 mm επειδή αυτό έχεις στον υπάρχοντα Product Title. Όμως για το reference T120.907.11.051.00, η επίσημη Tissot εμφανίζει αυτό το Seastar 2000 ως περίπου 46 mm σε τρέχουσες καταχωρίσεις. Πριν δημοσιεύσουμε, θα κρατούσα το εμπορικό title σου όπως είναι μόνο αν η δική σου επίσημη καρτέλα/παλιό Tissot catalogue γράφει 44 mm. Δεν θέλω να σου παρουσιάσω ανακριβή διάσταση σαν βεβαιότητα.
Why Buy From KG Jewellery?
Purchasing the Tissot Seastar Powermatic 80 44mm Grey from KG Jewellery means choosing an authentic Swiss Made Tissot timepiece from an Official Tissot Retailer in Greece.
For a technically sophisticated mechanical watch such as the Seastar 2000, purchasing through an authorised retailer provides important confidence regarding authenticity, warranty and after-sales support.
Every Tissot supplied by KG Jewellery is brand new and accompanied by the official international manufacturer’s warranty.
When you choose KG Jewellery, you benefit from:
- Official Tissot Retailer in Greece
- 100% Authentic Tissot Watches
- Official Tissot International Warranty
- Original Tissot Presentation Box
- Secure Online Payments
- Fast & Reliable Shipping
- Professional Customer Support
- Carefully Protected Packaging
What’s in the Box?
Your Tissot Seastar Powermatic 80 44mm Grey is supplied with:
- Tissot Seastar 2000 Powermatic 80 Grey Gradient Dial
- Original Tissot Presentation Box
- Official Tissot International Warranty
- Tissot Documentation
- Original Stainless-Steel Bracelet
Frequently Asked Questions
Is the Tissot Seastar Powermatic 80 44mm Grey automatic?
Yes. The Tissot Seastar Powermatic 80 44mm Grey uses Tissot’s Swiss automatic Powermatic 80 movement.
The movement is mechanically powered through wrist motion rather than a conventional quartz battery.
How long is the power reserve?
The Powermatic 80 movement provides up to 80 hours of power reserve when fully wound.
This allows the Tissot Seastar Powermatic 80 44mm Grey to continue operating for more than three days without being worn.
What is Nivachron™?
Nivachron™ is Tissot’s patented balance-spring technology developed to improve resistance to magnetic influences.
This is especially useful in modern environments where mechanical watches may be exposed to magnetic fields from electronic devices and accessories.
What makes the Seastar 2000 different from the Seastar 1000?
The most significant difference is water resistance.
The Seastar 1000 models commonly offer around 300 m / 1000 ft, while this Seastar 2000 reference provides an impressive 600 m / 2000 ft.
The Seastar 2000 also incorporates a helium escape valve, reinforcing its more specialised diving-oriented construction.
Is the Tissot Seastar 2000 water resistant?
Yes. The Tissot Seastar Powermatic 80 44mm Grey provides extraordinary water resistance to 60 bar / 600 metres / 2000 feet.
This is one of the defining specifications of the Seastar 2000 collection.
Why is it called Seastar 2000?
The Seastar 2000 name reflects its water-resistance capability of approximately 2,000 feet, equivalent to roughly 600 metres.
Does it have a helium escape valve?
Yes.
The Tissot Seastar Powermatic 80 44mm Grey incorporates a helium escape valve, a feature associated with saturation-diving environments.
The valve is designed to allow helium that may accumulate inside the case under prolonged high-pressure conditions to escape during decompression.
Does it have a screw-down crown?
Yes. The watch uses a screw-down crown as part of its high-pressure water-resistant construction.
The crown should always be properly secured before exposure to water.
Does the bezel rotate?
Yes. The watch features an anti-clockwise rotating bezel.
Its unidirectional operation follows the traditional safety design used on diving watches.
Is the bezel ceramic?
Yes. The Tissot Seastar Powermatic 80 44mm Grey uses a ceramic bezel ring.
Ceramic offers strong resistance against scratching and helps maintain the appearance of the bezel during frequent use.
Does the Seastar 2000 have sapphire crystal?
Yes. The dial is protected by scratch-resistant sapphire crystal with antireflective treatment.
This provides excellent resistance against surface scratching while helping maintain clear visibility.
What colour is the dial?
The official colour is best described as grey gradient.
The gradual tonal variation gives the dial more visual depth than a conventional flat grey surface.
Does the watch have Super-LumiNova®?
Yes. Tissot uses Super-LumiNova® to improve visibility when ambient lighting becomes reduced.
This is particularly important for a watch with serious diving-oriented credentials.
Does the watch have a date?
Yes. The Powermatic 80 movement incorporates a practical date display.
Can I see the automatic movement?
Yes. The Tissot Seastar Powermatic 80 44mm Grey incorporates a see-through caseback, allowing the wearer to view the mechanical movement.
This creates an interesting contrast between the highly technical diving exterior and the visible mechanical architecture underneath.
Does the bracelet have a quick-release system?
Yes. The stainless-steel bracelet incorporates Tissot’s interchangeable quick-release system, making compatible strap changes more convenient.
Does it have a diver extension?
Yes. The bracelet clasp includes a diver extension, allowing additional adjustment when required.
Is the Tissot Seastar 2000 suitable for swimming?
With its 600 m water-resistance specification and screw-down architecture, the Tissot Seastar Powermatic 80 44mm Grey provides substantially greater water protection than a conventional everyday watch.
The crown must always be fully secured before entering the water.
Is it suitable for diving?
The watch combines 600 m water resistance, a unidirectional bezel, screw-down construction and a helium escape valve, giving it serious diving-oriented specifications.
For actual diving, it should always be used according to Tissot’s official operating instructions and appropriate professional diving practices.
What is the purpose of the helium valve?
In saturation-diving environments, tiny helium molecules can penetrate a watch case during prolonged exposure to pressurised breathing gases.
During decompression, the valve allows accumulated helium to escape safely instead of creating excessive internal pressure.
For ordinary recreational use, the valve will generally never be required, but its presence demonstrates the technical depth of the Seastar 2000.
Is the Seastar 2000 suitable for everyday wear?
Yes, provided the wearer enjoys large and substantial watches.
The Tissot Seastar Powermatic 80 44mm Grey combines sapphire crystal, stainless-steel construction and a robust automatic movement, making it highly capable for regular wear.
Its size and weight naturally create a much stronger wrist presence than a conventional dress or everyday watch.
Does the automatic movement need a battery?
No.
The Powermatic 80 is a mechanical automatic movement and therefore does not use the conventional battery found in quartz watches.
Does the watch need winding?
Automatic wrist motion helps maintain the movement’s stored energy. If the watch has stopped after being left unworn, it can be restarted according to Tissot’s winding instructions.
Its extended 80-hour power reserve means this will generally be required less frequently than with many conventional automatic movements.
Is the Tissot Seastar Powermatic 80 44mm Grey a good gift?
Yes. Its distinctive grey gradient design, Swiss automatic movement and exceptional technical specification make the Tissot Seastar Powermatic 80 44mm Grey an exceptional gift for someone passionate about mechanical watches, diving or high-performance Swiss sports watches.
Official Tissot Model Information
For the manufacturer’s information for exact reference T120.907.11.051.00, use the Focus Keyword as the anchor:
