Omega Seamaster Seamaster 300 M Diver Chronometer (promotional/product placement <a href="//commons.wikimedia.org/wiki/James_Bond" title="James Bond">James Bond</a> edition). The second "crown" (at 10 o'clock) is a helium release valve.<br> I'm releasing this to the public domain. Digital picture of my watch overtop of a promotional brochure.
<a href="https://en.wikipedia.org/wiki/User:FrankWilliams" class="extiw" title="wikipedia:User:FrankWilliams">FrankWilliams</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
20 November 2006 (original upload date)
Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikipedia.org">en.wikipedia</a></span> to Commons.