Radio clocks , radio controlled watches , and atomic clocks have made mechanical clock - chronometers obsolete for time standards used scientifically and / or industrially , although most custom watchmakers still produce them and are considered status symbols when produced by the likes of Rolex .
Radio clocks , radio controlled watches , and atomic clocks have made mechanical clock - chronometers obsolete for time standards used scientifically and / or industrially . 
 Most custom watchmakers do still produce them , however , and they are considered status symbols when produced by the likes of Rolex .