Tissot Seastar Chronograph 45mm Black Dial
The Tissot Seastar Chronograph 45mm Black Dial combines the technical character of a Swiss diving watch with the added functionality and dynamic appearance of a quartz chronograph. Built around a substantial stainless-steel case, deep black dial and matching diving-inspired bezel, this Seastar 1000 delivers strong wrist presence together with serious aquatic capability.
The official case diameter of reference T120.417.11.051.00 is 45.5 mm, giving the watch a powerful and unmistakably sporty personality. At 12.82 mm thick, it retains a relatively controlled profile considering its chronograph construction and substantial 300 m water-resistance rating.
The Tissot Seastar Chronograph 45mm Black Dial features a 316L stainless-steel case combined with a matching stainless-steel bracelet. The black dial provides a timeless foundation, while the chronograph subdials introduce additional visual complexity and reinforce the technical character of the model.
Inside is a precise Swiss Quartz chronograph movement, powered by a Renata 394 battery and equipped with an EOL battery end-of-life indicator. The chronograph provides a 30-minute counter, 1/10-second measurement, central 60-second chronograph hand and ADD and SPLIT timing functions.
Scratch-resistant sapphire crystal with double-sided antireflective coating protects the dial, while a screw-down crown and caseback support the substantial 30 bar / 300 metres / 1000 feet water resistance.
Discover more high-performance Swiss diving watches in our Tissot Seastar Collection.
Powerful 45.5mm Chronograph Design
The Tissot Seastar Chronograph 45mm Black Dial is designed for someone who enjoys watches with genuine wrist presence.
Tissot officially specifies the case at 45.5 mm wide and 45.5 mm long, with a thickness of 12.82 mm and lug width of 22 mm. The complete stainless-steel configuration weighs approximately 180 g.
These dimensions make the watch noticeably more substantial than the 40 mm quartz Seastar we completed previously.
The larger case provides the additional dial space required for the chronograph displays while preserving excellent readability.
Despite its size, the architecture remains visually balanced thanks to the round case, integrated bezel proportions and structured black dial.
For someone who prefers a bold sports-watch aesthetic, the Tissot Seastar Chronograph 45mm Black Dial delivers exactly the kind of presence expected from a high-performance chronograph.
Black Chronograph Dial
The black dial is one of the strongest visual elements of the Tissot Seastar Chronograph 45mm Black Dial.
Black provides a highly versatile backdrop for the chronograph subdials and luminous hour indications, giving the watch a technical appearance without making the design unnecessarily colourful.
Tissot combines index hour markers with Super-LumiNova® on the hands and visible case elements, improving readability when lighting conditions become reduced.
The chronograph layout gives the dial considerably more visual depth than the standard three-hand Seastar.
Despite the additional information, Tissot maintains clear separation between the main time display and timing functions.
This allows the Tissot Seastar Chronograph 45mm Black Dial to remain functional while retaining the strong visual identity expected from the Seastar collection.
Swiss Quartz Chronograph Movement
Inside the Tissot Seastar Chronograph 45mm Black Dial is a Swiss Quartz chronograph movement designed for excellent accuracy and convenient everyday operation.
The movement uses a Renata 394 battery at 1.55 V and includes several useful timing functions.
The chronograph incorporates a 30-minute counter, a 1/10-second counter and a central 60-second chronograph hand.
Tissot also includes ADD and SPLIT functions, allowing the wearer to measure accumulated or intermediate timing intervals.
An EOL battery end-of-life indicator provides advance warning when battery replacement is approaching.
For someone who wants additional timing functionality without the maintenance requirements of a mechanical chronograph, the Tissot Seastar Chronograph 45mm Black Dial offers an exceptionally practical solution.
Explore more precise Swiss watches featuring a Swiss Quartz Movement.
Chronograph Functionality
The chronograph functionality gives the Tissot Seastar Chronograph 45mm Black Dial considerably more capability than a standard three-hand sports watch.
The 30-minute counter allows longer intervals to be measured, while the 1/10-second display provides more precise timing for shorter events.
A central 60-second chronograph hand maintains clear elapsed-time visibility.
The ADD function allows multiple timing periods to be combined, while SPLIT timing makes it possible to record intermediate intervals.
These functions make the chronograph useful for sports, travel, training and general everyday timing tasks.
More importantly, they contribute to the technical identity of the Tissot Seastar Chronograph 45mm Black Dial, giving the watch both practical functionality and a more complex visual character.
Aluminium Diving Bezel
The Tissot Seastar Chronograph 45mm Black Dial features an anti-clockwise rotating bezel with an aluminium bezel ring.
The unidirectional operation follows the traditional safety concept associated with diving watches.
The dark aluminium insert complements the black dial and creates a cohesive monochromatic appearance.
Unlike ceramic, aluminium has a slightly more traditional diving-watch character and contributes to the classic sports aesthetic of the Seastar.
The bezel also provides an additional elapsed-time reference independent of the chronograph mechanism.
Sapphire Crystal with Double AR Coating
Protecting the dial is scratch-resistant sapphire crystal with double antireflective coating on both the upper and lower surfaces.
This is an especially strong specification for an active sports watch.
Sapphire provides excellent resistance against everyday scratching, while the double AR treatment helps reduce reflections under bright lighting conditions.
For a chronograph dial containing several displays and indications, improved crystal clarity becomes particularly important.
The result is excellent visibility of the Tissot Seastar Chronograph 45mm Black Dial across a variety of environments.
Screw-Down Construction
The substantial aquatic capability of the Tissot Seastar Chronograph 45mm Black Dial is supported by a screw-down crown and caseback.
Tissot also specifies water resistance with screw-down crown and push-buttons, reinforcing the robust construction of this reference.
This architecture helps protect the internal movement from water penetration under pressure.
The combination of screw-down components, sapphire crystal and stainless-steel construction provides the foundation required for the Seastar’s 300 m rating.
Stainless-Steel Bracelet
The Tissot Seastar Chronograph 45mm Black Dial is fitted with stainless-steel bracelet reference T605046894.
The bracelet is finished in grey stainless steel and secured using a folding clasp with safety lock, diver extension and double push-buttons.
The diver extension provides additional adjustment when required, while the safety lock helps maintain secure fastening during active use.
Tissot also incorporates an interchangeable quick-release bracelet system, making compatible strap changes more convenient.
The substantial bracelet complements the 45.5 mm case and contributes to the solid 180 g total weight of the watch.
300m Water Resistance
The Tissot Seastar Chronograph 45mm Black Dial is water resistant to an impressive 30 bar / 300 metres / 1000 feet.
This substantial specification remains one of the defining characteristics of the Seastar 1000 collection.
The watch combines its 300 m rating with a screw-down crown and caseback, rotating bezel and diver-oriented bracelet clasp.
This makes the chronograph considerably more capable around water than an ordinary everyday watch.
The 1000 designation refers to approximately 1,000 feet of water resistance, directly reflecting the aquatic engineering behind the Seastar name.
Chronograph Performance Meets Diving Capability
The Tissot Seastar Chronograph 45mm Black Dial brings together two different sports-watch traditions.
Its rotating bezel, screw-down construction, luminous markings and 300 m water resistance draw directly from diving-watch design.
At the same time, the Swiss quartz chronograph movement introduces precision timing through its 30-minute, 1/10-second, ADD and SPLIT functions.
This combination makes the watch particularly versatile for someone who wants more functionality than a conventional three-hand sports watch.
Sapphire crystal, stainless-steel construction and an EOL indicator further strengthen its everyday practicality.
A Bold Swiss Sports Chronograph
The Tissot Seastar Chronograph 45mm Black Dial is designed for someone who prefers substantial proportions, serious aquatic capability and the functionality of a chronograph.
Its 45.5 mm stainless-steel case creates commanding wrist presence, while the black dial and matching bezel provide a timeless sports-watch aesthetic.
Swiss Quartz precision ensures dependable timing, while sapphire crystal, Super-LumiNova®, screw-down construction and 300 m water resistance give the watch genuine technical substance.
For someone looking for a bold Swiss Made chronograph with diving-inspired engineering and exceptional everyday capability, the Tissot Seastar Chronograph 45mm Black Dial is an excellent choice.
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 Chronograph 45mm Black Dial is designed for someone who wants the capability of a serious Swiss sports watch combined with the added functionality of a chronograph.
Its substantial 45.5 mm stainless-steel case gives the watch a bold wrist presence, while the black dial and matching bezel keep the design versatile and unmistakably sporty.
This model is particularly appealing to wearers who value precise timing functions but prefer the convenience of a quartz movement over a mechanical chronograph. The Tissot Seastar Chronograph 45mm Black Dial offers 1/10-second timing, a 30-minute counter, ADD and SPLIT functions, plus a practical date display.
Its 300 m water resistance, screw-down crown and pushers, rotating bezel and diver-oriented bracelet also make it significantly more capable around water than an ordinary chronograph.
For someone looking for a large, powerful Swiss Made sports chronograph with genuine aquatic credentials, this Seastar is an excellent choice.
Why Choose the Tissot Seastar Chronograph 45mm Black Dial?
The strength of the Tissot Seastar Chronograph 45mm Black Dial lies in the combination of precise quartz timing and substantial diving-oriented construction.
Its Swiss Quartz Chronograph movement uses a Renata 394 battery and includes an EOL battery end-of-life indicator. Chronograph functionality includes a central 60-second hand, 30-minute counter, 1/10-second measurement and ADD and SPLIT functions.
Externally, Tissot equips the watch with scratch-resistant sapphire crystal featuring double-sided antireflective coating, an aluminium bezel ring, screw-down construction and 300 m / 1000 ft water resistance.
The stainless-steel bracelet includes a diver extension and secure folding clasp with safety lock and double push-buttons.
Combined with the timeless black dial, these features make the Tissot Seastar Chronograph 45mm Black Dial a highly capable and exceptionally versatile Swiss sports chronograph.
Why You’ll Love It
- Timeless black chronograph dial
- Powerful 45.5 mm case
- Swiss Quartz Chronograph movement
- 30-minute chronograph counter
- 1/10-second chronograph timing
- Central 60-second chronograph hand
- ADD chronograph function
- SPLIT chronograph function
- EOL battery end-of-life indicator
- Practical date display
- 316L stainless-steel case
- Anti-clockwise rotating bezel
- Aluminium bezel ring
- Scratch-resistant sapphire crystal
- Double-sided antireflective coating
- Super-LumiNova® visibility
- Screw-down crown
- Screw-down push-buttons
- Screw-down caseback
- 300 m / 30 bar / 1000 ft water resistance
- Stainless-steel bracelet
- Interchangeable quick-release bracelet system
- Folding clasp with safety lock
- Diver extension
- Double push-buttons
- Swiss Made construction
- Exceptional sports-watch capability
- Official 2-year Tissot warranty
Technical Specifications
- Reference / SKU: T120.417.11.051.00
- Collection: Sport / Seastar 1000
- Movement: Swiss Quartz Chronograph
- Battery: Renata 394
- Battery Voltage: 1.55 V
- Battery Indicator: EOL – Battery End-of-Life
- Chronograph Counter: 30 Minutes
- Chronograph Precision: 1/10 Second
- Chronograph Seconds: Central 60-Second Hand
- Additional Chronograph Functions: ADD and SPLIT
- Main Function: Date
- Calibre: 13 ¼”’
- Movement Diameter: 29.8 mm
- Case Shape: Round
- Case Material: 316L Stainless Steel
- Case Length: 45.50 mm
- Case Width / Diameter: 45.50 mm
- Case Thickness: 12.82 mm
- Lug Width: 22 mm
- Weight: 180 g
- Crown: Screw-down
- Push-buttons: Screw-down
- Caseback: Screw-down
- Bezel: Anti-clockwise Rotating
- Bezel Material: Stainless Steel
- Bezel Ring: Aluminium
- Crystal: Scratch-resistant Sapphire Crystal
- Crystal Treatment: Double-sided Antireflective Coating
- Dial Colour: Black
- Indexes: Index
- Luminescence: Super-LumiNova® on Hands and Visible Elements
- Water Resistance: 30 bar / 300 m / 1000 ft
- Bracelet Reference: T605046894
- Bracelet Material: Stainless Steel
- Bracelet Colour: Grey
- Bracelet System: Interchangeable Quick Release
- Clasp: Folding Clasp with Safety Lock, Diver Extension and Double Push-buttons
- Links Reference: T613046895
- Country of Manufacture: Switzerland
- Warranty: 2 Years
These specifications are confirmed by Tissot for reference T120.417.11.051.00.
Why Buy From KG Jewellery?
Purchasing the Tissot Seastar Chronograph 45mm Black Dial from KG Jewellery means choosing an authentic Swiss Made timepiece from an Official Tissot Retailer in Greece.
Every Tissot watch supplied by KG Jewellery is brand new and accompanied by the official Tissot international warranty. Secure online payments, carefully protected packaging and professional customer support provide confidence throughout your purchase.
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 Chronograph 45mm Black Dial is supplied with:
- Tissot Seastar 1000 Quartz Chronograph T120.417.11.051.00
- Original Tissot Presentation Box
- Official Tissot International Warranty
- Tissot Documentation
- Original Stainless-Steel Bracelet
Frequently Asked Questions
Is the Tissot Seastar Chronograph 45mm Black Dial quartz?
Yes. The Tissot Seastar Chronograph 45mm Black Dial uses a Swiss Quartz Chronograph movement designed for precise timing and dependable everyday operation.
What is the exact case size?
Tissot officially specifies this reference at 45.5 mm, although the Product Title uses 45 mm for a cleaner commercial presentation.
The case also measures 12.82 mm thick with a 22 mm lug width.
How much does the watch weigh?
The Tissot Seastar Chronograph 45mm Black Dial weighs approximately 180 g with its stainless-steel bracelet.
What colour is the dial?
Reference T120.417.11.051.00 features an officially specified black dial with index hour markers.
What chronograph functions does it have?
The watch includes:
- 30-minute counter
- 1/10-second counter
- Central 60-second chronograph hand
- ADD timing function
- SPLIT timing function
These are all official movement functions listed by Tissot.
What is the ADD function?
The ADD function allows multiple consecutive timing intervals to be accumulated into one total elapsed time.
This can be useful for timing events made up of several stages.
What is the SPLIT function?
The SPLIT function allows an intermediate time to be recorded while the chronograph continues measuring the overall elapsed interval.
It is useful for timing laps, stages or multiple participants.
Does the watch have a date?
Yes. Tissot lists date as the main additional function of the movement.
What battery does it use?
The Tissot Seastar Chronograph 45mm Black Dial uses a Renata 394 battery at 1.55 V.
What does EOL mean?
EOL stands for End of Life.
The battery end-of-life indicator provides advance warning when battery replacement is approaching.
Does the Tissot Seastar have sapphire crystal?
Yes. This model features scratch-resistant sapphire crystal with double-sided antireflective coating.
Why is double antireflective coating useful?
The treatment reduces reflections from both sides of the sapphire crystal, helping improve visibility of the chronograph dial under changing lighting conditions.
Does the watch have Super-LumiNova®?
Yes. Tissot applies Super-LumiNova® to the hands and visible elements, improving low-light readability.
Is the bezel ceramic?
No. On this exact reference, Tissot specifies an aluminium bezel ring, not ceramic.
Does the bezel rotate?
Yes. The Tissot Seastar Chronograph 45mm Black Dial uses an anti-clockwise rotating bezel, following the traditional unidirectional configuration associated with diving watches.
Does it have a screw-down crown?
Yes. The crown is screw-down, supporting the substantial water-resistant construction of the watch.
Are the chronograph pushers screw-down?
Yes. Tissot specifies the watch as water resistant to 300 m with screw-down crown and push-buttons.
Is the caseback screw-down?
Yes. The Tissot Seastar Chronograph 45mm Black Dial also uses a screw-down caseback as part of its robust aquatic construction.
Is the Tissot Seastar Chronograph water resistant?
Yes. The watch is water resistant to an impressive 30 bar / 300 metres / 1000 feet.
Why is it called Seastar 1000?
The 1000 designation refers to approximately 1,000 feet of water resistance, equivalent to around 300 metres.
This is one of the defining specifications of the Seastar 1000 collection.
Is it suitable for swimming?
Its 300 m water-resistance rating and screw-down construction make the Tissot Seastar Chronograph 45mm Black Dial highly capable around water.
The crown and pushers should always be correctly secured before water exposure.
Is it suitable for diving?
The model combines 300 m water resistance, screw-down controls and a unidirectional rotating bezel, giving it the core technical features expected from a serious diving-oriented sports watch.
For actual diving, it should always be used according to Tissot’s official operating instructions and appropriate diving practices.
Can I use the chronograph underwater?
Chronograph pushers should not be operated underwater unless the manufacturer specifically permits it for that situation.
The safest practice is to secure the pushers before water exposure and use the rotating bezel for underwater elapsed-time measurement.
What material is the bracelet?
The watch uses a stainless-steel bracelet, reference T605046894.
Does the bracelet have a diver extension?
Yes. Tissot equips the bracelet with a folding clasp featuring a safety lock, diver extension and double push-buttons.
Can the bracelet be changed easily?
Yes. The bracelet incorporates Tissot’s interchangeable quick-release system, making compatible strap changes more convenient.
Is 45.5mm suitable for everyday wear?
For someone who prefers large watches with a strong wrist presence, yes.
The Tissot Seastar Chronograph 45mm Black Dial is intentionally substantial, so it will feel noticeably larger and heavier than a 40 mm Seastar.
Is the black dial easy to style?
Yes. Black is one of the most versatile sports-watch colours.
Combined with stainless steel, it allows the Tissot Seastar Chronograph 45mm Black Dial to work naturally with sportswear, casual clothing and many smart-casual outfits.
Is quartz more accurate than an automatic chronograph?
Quartz movements generally provide greater day-to-day accuracy and require less maintenance than traditional mechanical chronographs.
This makes the Seastar an excellent choice for someone who prioritises precise timing and straightforward ownership.
Does the Tissot Seastar Chronograph require winding?
No. Because this model uses a Swiss Quartz movement, it does not require manual winding or wrist motion to maintain a mechanical power reserve.
Is the Tissot Seastar Chronograph 45mm Black Dial a good gift?
Yes. Its powerful chronograph design, Swiss Made construction, 300 m water resistance and versatile black dial make the Tissot Seastar Chronograph 45mm Black Dial an exceptional gift for birthdays, anniversaries, graduations and important milestones.
It is particularly suitable for someone who appreciates large sports watches, chronographs or aquatic-inspired designs.
Official Tissot Model Information
For the manufacturer’s official specifications for reference T120.417.11.051.00, use the exact Focus Keyword as the external-link anchor:
