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Round 43 mm stainless steel case with blue dial and rubber strap

Tissot

Tissot T120.407.17.041.00 Seastar 1000 Powermatic 80 watch 43 mm

SKU CH-3PR5-VYA84 MPN T120.407.17.041.00

A 43 mm Swiss automatic diver rated to 300 metres with an 80-hour power reserve, blue dial and rubber strap

  • StyleSports
  • MaterialStainless Steel
  • MovementSwiss Automatic
  • ShapeRound
  • Dial ColorBlue
  • Dial MarkersDotted Markers
  • Swiss automatic movement delivers up to 80 hours of power reserve
  • 300 m water resistance supports serious diving activity
  • 316L stainless steel case resists corrosion in salt water
  • Unidirectional bezel enables safe elapsed-time tracking underwater
  • Blue dial with dotted markers ensures clear legibility at depth

Seastar 1000 Powermatic 80 43 mm

The Tissot Seastar 1000 Powermatic 80 is a Swiss automatic dive watch built around a 43 mm 316L stainless steel case. A blue dial with dotted markers pairs with a rubber strap and buckle clasp. The movement delivers an 80-hour power reserve and the case is rated to 300 metres water resistance with a unidirectional bezel and screw-down crown.

Serious divers and daily wearers

Suits buyers who want a certified diver with long power reserve and robust 316L construction for swimming or desk duty. Not for shoppers needing a chronograph complication, GMT hand or integrated metal bracelet. The rubber strap and 43 mm diameter may feel large on slender wrists.

Straightforward strap swap

The rubber band uses standard spring bars so a spring-bar tool lets you change straps in minutes. Ensure the crown is fully screwed down before water exposure; forgetting this is the most common cause of moisture ingress. Avoid over-tightening the case back during battery-less service to protect the gasket seal.

Highlights

  • Swiss automatic movement delivers up to 80 hours of power reserve
  • 300 m water resistance supports serious diving activity
  • 316L stainless steel case resists corrosion in salt water
  • Unidirectional bezel enables safe elapsed-time tracking underwater
  • Blue dial with dotted markers ensures clear legibility at depth

Specifications

BrandTissot
ModelT120.407.17.041.00
StyleSports
MaterialStainless Steel
MovementSwiss Automatic
ShapeRound
Dial ColorBlue
Dial MarkersDotted Markers
DisplayAnalog
DateDate
Band MaterialRubber
FastenerBuckle Clasp
GenderMen's
AgeAdult
ConditionNew
BezelUnidirectional Bezel
Case BackScrew Down Crown
Case Diameter43
Case Material316L Stainless Steel Case
Case Thickness43.00 mm
CrystalSapphire
Water-Resistant300
Special FeaturesSapphire Crystal,Buckle Clasp,Date Display,Screw Down Crown

Questions about this item

Does the 316L stainless-steel case require any special tools or extra links to fit the rubber strap?

The watch ships complete with the rubber strap already fitted to the 316L stainless-steel case using spring bars, so no extra links or tools are needed to wear it.

Will the unidirectional bezel on this 43 mm Seastar 1000 still turn smoothly if I keep wearing my older dive watch alongside it?

Yes, the unidirectional bezel operates independently on its own ratchet mechanism, so using another watch has no effect on its rotation or click feel.

How can I confirm the Powermatic 80 movement is running within its 80-hour power reserve after I set it up?

Fully wind the crown, note the time, then leave the watch off the wrist; if it is still running roughly 80 hours later the movement is delivering its rated reserve.

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