In 1999 Omega released it’s calibre 2500 movement with a Co-Axial escapement.
The co-axial escapement was a revolutionary system developed by George Daniels (a British watchmaker) which, in effect, reduced friction and thus virtually eliminating the requirement for lubrication in the escapement of the watch. Theoretically this ensures greater accuracy over time and reduces the need for servicing.
This is revolutionary because the watch escapement and the theory behind it has been mostly unchanged for over 200 years.
Here we have an Omega Seamaster with a co-axial escapement.