The Omega Marine Chronometer was made by the watchmaker based in what Swiss city?
Omega Marine Chronometer:  The watch was made by Omega SA and developed by John Othenin-Girard and is one of the most accurate non thermo-compensated production watches ever made, keeping time to within 1 second per month Omega SA: Omega SA ( ; ) is a Swiss luxury watchmaker based in Biel/Bienne, Switzerland.
Biel/Bienne