Swatch Jelly Fish Chronometer


Manufactured in 1985 and submitted to COSC for certification in 1990, as the last batch of watches was processed under the old chronometer stadard, this otherwise very ordinary Swatch comes complete with a COSC chronometer certificate. The COSC certificate states that the movement of this watch has the number 2489 (COSC tests movements, not watches), but I have recorded this as the serial number of the watch, rather than as the movement number, as it is the unique identifying number stamped on the back of the watch case and does not seem to correspond to a typical ETA movement number. In the absence of a factory SPY value, I have attributed the value of 60 SPY to this watch, as this was the threshold it would have to have passed in order to gain COSC certification.

jelly fish

Some details for this watch may be missing because it is kept several thousand miles away, in the UK.

Parent Company Swatch Group
Brand Swatch
Model Series Jelly Fish
Model Name Jelly Fish Chronometer
Model Number GK124
Case Number unknown
Serial Number 2489
Approx. Date of Manufacture 1985
Calibre (mvt maker) unknown
Calibre (brand) unknown
Factory SPY 60 (COSC)
TC Appproach none
Frequency (XO 1) 32 kHz
Frequency (XO 2) n/a
Rate Adjustment none
Major Inhibition Period n/a
Minor Inhibition Period unknown
Power Disposable cell
Cell Number unknown
Case Back Cell hatch
Water Resistance unknown
Features 3-hand, no numeral dial
Timing Results Basic data  &  Further details
Images Photos - Large File Sizes!