What time is it? Watches and horology

You mean the Accutron?

I love tuning fork movements. Partly because it is a complete technological blind alley. No sooner had Bulova perfected it than quartz movements came and blew it in to the weeds. But as a result there is something romantic about them, that quartz will never have, and despite the fact that it's electronic there is a human-made quality about the way the fork has to be tuned precisely for accurate timekeeping. They also make a lovely sound when you hold them up to your ear.

The thing to beware of with them is that the older ones may require a type of battery that is no longer available. Do a bit of research to find out what to avoid, or whether you can substitute another kind of battery in there.

The best tuning fork movements are the ESA 9162 / ESA 9184 ones that Omega put in the F300 line - these were based on the final generation of movements which had fine adjustment of the forks and were impervious to changes of position, angle, g force, etc. The real clincher is that they also take modern batteries, so there's no reason why you can't wear one as a daily. As well as Omegas they went in Longines and a few others.

If you're worried about a fake one don't be. Who would fake an obsolete movement that only a few people want? Who could? Not even Omega have all the parts for these anymore. Happily I have a guy who knows them like the back of his hand and can do all the servicing on them.

The real weak point of the movement is date wheels. They were plastic, and the teeth wear and break. It's rare to find one with day and date still working.
I have an exceptionally rare 1972 Constellation with a metal date wheel, so they do exist.
Amazingly, having never seen another in years there are two identical models on the Bay right now. This, which looks lovely:
http://www.ebay.co.uk/itm/Omega-F300-hz-Constellation-/290843491870?pt=UK_Jewelery_Watches_Watches_MensWatches_GL&hash=item43b79f7e1e
and this, which looks battered and is sold as "not working" but might just need a service and a battery.
http://www.ebay.co.uk/itm/A-SUPERB-GENTS-VINTAGE-OMEGA-CONSTELLATION-ELECTRONIC-F300HZ-CHRONOMETER-/321055634512?pt=UK_Jewelery_Watches_Watches_MensWatches_GL&hash=item4ac0683450

See http://www.electric-watches.co.uk/make/omega/f300/f300.php for more info
wonderful information Niall! Thank you.

I'm watching the clean one. I have a fascination for Bulova cause of the fork.

As for fakes, I realise the dead end fork won't be imitated.

But what of the others like Tag and Omega and so on. If they have a lot of good feed back, is that enough?