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Top-tier supplier movement · caliber ETA Powermatic 80 (Tissot): Swiss automatic, 21,600bph, 80h PR, 21j; Tissot-branded ETA Powermatic 80; used in PRX, Le Locle, and Seastar 1000 · 80h power reserve (3.3 days) · see-through caseback

Also uses ETA Powermatic 80 (Tissot)

Tissot PRX Powermatic 80 Ref. T137.407.11.041.00, blue dial, steel case
Tissot
PRX
Tissot PRX 35 Powermatic 80 Ref. T137.207.11.031.00, silver dial, steel case
Tissot
PRX
Tissot Seastar 1000 Powermatic 80 Ref. T120.407.11.041.00, blue dial, steel case
Tissot
Seastar
Medium-large: suits wrists 6.5 in+ (16.5 cm+)
39.3 mm case. Wears confidently on average to larger wrists. May overhang on slender builds.

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Authentication

Applied indices must be fully seated with no lifting; loose indices indicate damage or QC failure.

Known issues in the market
  • Applied indices are the primary quality marker on the Le Locle at this price point; any index with visible gaps under its foot indicates a problem.
  • Dauphine hands must be straight and uniformly finished; bent or misaligned hands are a common used-market issue.
AreaWhat to checkWhat is correctRed flag
dialApplied index seatingAll applied indices flush against the dial surface with no visible gaps between the index foot and dialAny index with a visible gap or that appears to be lifting from the dial surface; indicates impact or QC defect
handsDauphine hand alignmentHour and minute hands straight, uniformly polished, and correctly positioned on their arborsBent, twisted, or misaligned hands; hands that have contacted the dial leaving circular scratch marks
casebackPowermatic 80 movementETA Powermatic 80 movement on exhibition-caseback variants; Tissot signed appropriatelyMovement inconsistent with Powermatic 80 architecture on display-back variants
Common legitimate replacements
  • Leather straps are a common service replacement; verify the lug width matches the replacement strap.
Expert resources: Tissot Le Locle documentation at tissotwatches.com. WatchUSeek Tissot subforum for applied index condition assessment.

Authentication guide

Last reviewed June 2026

The Le Locle Powermatic 80 is Tissot's thin dress watch in a round case. Low replica risk. The primary inspection focus is dial authenticity: Roman numerals are crisp and evenly spaced, not printed from a blurry source file.

Known reproduction risks

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LOW

The Le Locle is rarely replicated. Verify Roman numeral printing quality and caseback marking as a baseline check.

  • Roman numeral spacing uneven
  • Dial surface has a flat, matte appearance rather than the slight sheen of original

Dial variants by era

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EraDescriptionIdentifiers
2013 to presentSilver, black, or blue dial. Roman numerals I through XII in a classical typeface. "TISSOT" at 12, "LE LOCLE" below. Date window at 3 with no surround. Leaf-shaped hands.
  • Roman numeral XII sits directly below the 12 o'clock lug
  • Numerals are printed, not applied
  • "SWISS MADE" below 6
  • Dial has a slight guilloche texture on silver variants

Service part flags

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Hands

Original: Leaf-shaped (Breguet-style) blued-steel hands. The sweep seconds hand is thin with a fine point.

Replacement tells
  • Sword-shaped or dauphine hands are not original to this reference
  • Overly thick hand stacks suggest replacement from another Tissot model

Case back markings

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2013 to present
  • Exhibition caseback showing the ETA Powermatic 80 movement
  • "TISSOT" engraved on the movement rotor
  • Reference and serial on the caseback rim

Movement tells

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  • The Powermatic 80 beats at 21,600bph, slower than most dress watch movements. Count ticks through the exhibition caseback to verify: three ticks per second at rest is correct.
  • The caseback exhibition window must show the oscillating weight inscribed "Tissot." A generic ETA rotor is a tell of a movement swap.
Sources: Tissot Le Locle official page.

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