Published by OmegaTiming.com (official timer of the '07 Worlds); retrieved 2009-07-11.

Seiko is also the official timer of many major sporting events:

Published by OmegaTiming.com (official timer of the '09 Worlds); retrieved 2009-07-28.

He later served at boxing matches, where he was the official knockdown timer.

Arena is again the title sponsor for the series, with Omega serving as official timer.

Seiko has been designated the official timer for next year's Olympics to be held in Barcelona.

We were just two; larger groups may need to appoint an official timer.

I just showed up with a stopwatch and became an official timer.

Published by OmegaTiming.com (official timer of the 2005 Worlds); retrieved 2010-02-07.

There were three official timers in 1960 for each lane and swimmer, all timing by hand.