TRI-02 – GMT 3 Timezone COSC – Steel/Black/Rubber
TRI-02 – GMT 3 Timezone COSC – Steel/Black/Rubber
TRI-02 – GMT 3 Timezone COSC – Steel/Black/Rubber
TRI-02 – GMT 3 Timezone COSC – Steel/Black/Rubber
TRIBUS watches TRI-02 exploded diagram
TRI-02 – GMT 3 Timezone Chronometer packaging
  • SKU: TRI-02-SSTL-02-R02

GMT 3 Timezone COSC


($2,247.60 VAT incl.)

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Vintage in character, with striking black and yellow visuals; contemporary in its engineering, with chronometer-certified timekeeping. The TRI-02 can track three timezones at once: London, Geneva, even Gotham City.

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  • Chronometer-certified
  • Movement: Sellita SW330
  • 25 jewel self-winding mechanical movement
  • GMT functionality
  • Hacking seconds
  • Anti-shock system
  • Power Reserve: 42 hours
  • Frequency: 4Hz (28,800 vibrations per hour)
  • Timing tolerance: -4/+6 seconds per day

  • Brushed and polished 316L stainless steel case
  • Domed sapphire crystal with anti-reflective coating (front and back)
  • Screw-down exhibition caseback
  • Twin polished crowns with debossed TRIBUS logo (screw-down crown at 3 o'clock)
  • Engraved serial number
  • Diameter: 41mm
  • Height: 11.79mm
  • Lug to lug: 50.5mm
  • Strap width: 20mm
  • Water resistance: 15 ATM (150 metres)

  1. Matte black dial
  2. Hour, minute and GMT hands
  3. Adjustable raised 24-hour bezel with black and yellow detailing
  4. Central 24-hour GMT chapter ring
  5. Raised and polished indexes


  • 20mm black rubber strap with embossed TRIBUS logo repeated on underside
  • Polished stainless steel dress clasp with engraved TRIBUS logo
  • Quick-release pins for easy changing

The original GMT watches emerged during the 1950s, part of a jet-setting era that opened a whole new world of exotic destinations. The GMT 3 Timezone COSC is born of the spirit of that time, with a modern-retro aesthetic influenced by vintage aviation watches. Distinctive looks and vivid yellow detailing are all enhancements to a classic.

The TRI-02’s case is crafted from stainless steel in Switzerland, its sleek shape a striking example of the nation’s engineering capabilities. Yet it’s what you’ll see through its exhibition caseback that makes this watch possible. A Sellita SW330 movement powers a fourth GMT hand, read against an inner 24-hour ring so its user can track a second timezone; an outer 24-hour bezel can be adjusted by the TRI-02’s upper crown to set and follow a third.

Each SW330 movement found inside the TRI-02 has also has also passed through the Contrôle Officiel Suisse des Chronomètres, having been tested in a variety of positions and temperatures to guarantee optimum performance throughout. The result: guaranteed accuracy within -4/+6 seconds per day, placing the TRI-02 in the top 6% for all Swiss-made watches.


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