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Blue dial stainless steel chronograph on rubber strap, unidirectional bezel, round 40mm case

Tissot

Tissot T120.417.17.041.00 Seastar 1000 Chronograph watch

SKU CH-KNX4-90HBP MPN T120.417.17.041.00

A Swiss quartz chronograph with a unidirectional bezel, blue dial and rubber strap rated to 1000 m water resistance

  • Product seriesSeastar 1000
  • Watch movementSwiss Quartz
  • Product shapeRound
  • Watch face colorBlue
  • Dial markingsDotted Markers
  • Display typeAnalog
  • Swiss quartz movement delivers precise timekeeping
  • 1000-metre water resistance suits professional diving
  • Unidirectional bezel enables safe elapsed-time tracking
  • Chronograph function measures intervals with accuracy
  • Stainless steel case with rubber strap ensures durability

Seastar 1000 Chronograph for Men

The Tissot Seastar 1000 Chronograph is a sport watch built for adult men who want a Swiss-made instrument on the wrist. It blends a 1853 heritage with modern quartz precision in a stainless-steel case fitted to a rubber strap.

Unidirectional Bezel Defines Dive Utility

The unidirectional bezel is the single specification that decides suitability: it allows elapsed-time tracking underwater and prevents accidental rotation that would overstate remaining air. Without this feature the watch is not a dive tool.

Rubber Strap with Buckle Clasp Fits Quickly

The 40 mm rubber band fastens with a buckle clasp and is adjustable, so sizing takes seconds on the wrist. The only common issue is the rubber ageing faster than metal in salt water, requiring periodic strap replacement.

How it compares

Measured against everything we stock in Analog & Digital Wristwatches, at today’s prices. Recalculated every night.

Price $542.99
Pricier than about 90% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameTissot
Model nameT120.417.17.041.00
Design styleSport
Product seriesSeastar 1000
Watch face colorBlue
Item conditionNew
Display
Display typeAnalog
Size & build
Main materialStainless Steel
Product shapeRound
Strap materialRubber
Strap width40
Closure typeBuckle Clasp
Bezel typeUnidirectional Bezel
Case constructionScrew Down Crown
Case size45.5
Housing material316L Stainless Steel Case
Watch glassSapphire
Environment & compliance
Water resistance300
More details
Watch movementSwiss Quartz
AdjustabilityYes
Dial markingsDotted Markers
Date displayDate
Chronograph functionChronograph
Suitable forMen's
Age groupAdult

Questions about this item

What does the 1000 m water-resistance rating mean for daily wear?

The 1000 m rating means the case and crown are tested to withstand pressure equivalent to that depth, so swimming, snorkelling and recreational diving are well within its limits.

How does the Swiss Quartz movement affect timekeeping and maintenance?

Swiss Quartz delivers high accuracy with a battery that typically lasts several years; no winding is needed and the chronograph functions are controlled by pushers.

Will the 40 mm rubber strap and buckle clasp fit a larger wrist?

The 40 mm band width is the lug-to-lug measurement; the rubber strap has multiple holes and the buckle clasp allows fine adjustment for most wrist sizes.

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