- Brand: OMEGA
- Made: 1974
- Model: Marine Chronometer
- Reference: ST 398.0836
- Calibre: 1511
- Movement: Quartz
- Material: Stainless steel
- Features/complications: Solid 14 carat gold bezel and 14 carat gold plaque bearing individual serial number of the movement.
- Dial: Charcoal black analogue dial with white luminous outer minute track featuring white luminous hour markers and hands with centre seconds hand with date aperture at 6 o'clock
- Case dimensions: 36 x 40 mm
- Bracelet/strap: Integrated stainless steel bracelet
- Accessories: Extract from the Archives
- Web reference: 02888
Essay: The OMEGA Marine Chronometer was introduced to the market in 1974 and the first quartz wristwatch to be awarded certified status as a marine chronometer.
The watch was developed and patented by John Othenin-Girard using a calibre 1511 2.4 MHz Megaquartz movement and is one of the most accurate non thermo-compensated production watches ever made, keeping time to within 1 second per month. In 1976 the calibre 1516 Marine Chronometer Megaquartz was introduced with smaller case dimensions and altered movement, although performance remained the same.
Sales began in 1974 and the watch remained in production until 1978.