Dating omega seamaster watches
One is the Seamaster 300 “SPECTRE” Limited Edition, the first time that the watch worn on-screen has been released as a limited edition (7,007 models available).It also has a black ceramic bi-directional bezel ring, built with a 12-hour scale in Liquidmetal®.
Read off the tachymetric scale the speed indicated by the central seconds hand.
To avoid this, the Seamaster Professional Diver is equipped with a valve specially developed by OMEGA. One is the Seamaster 300 SPECTRE Limited Edition, the first time that the watch worn on-screen has been released as a limited edition (7,007 models available).
It features a 41 mm stainless steel case with a unique grey and black striped NATO strap.
The divers, still inside the bell, are then lowered to the working site. Once their work is complete, they re-enter the bell, which is then raised to the surface.
Pressure is then returned to atmospheric levels and this is when the valve must be opened (only for deep-sea dives lasting several days).
The helium molecules diffuse and penetrate the material of the gaskets.