At Auction: Baume & Mercier, Genève, very rare quartz marine chronometer, in an 8-cornered mahogany case with carrying handles, original case and papers.
What is Quartz Crystal Chronometer? | MarineGyaan
1388-22 | Quartz chronometer | Fischer Barometer
Dsz Type Quartz Marine Chronometer - Boat Accessories - AliExpress