I looked all over for a cell-phone alert watch. I think a watch would be a nice way to notify me of calls with a vibration, because I dislike ringers.
If you ever get a Sony/Fossil watch to work, let me know, they have the nice "control your music player from your watch" feature that would be fun with iTunes. Somebody can make a lot of money with these for the iPhone.
For now, I finally tracked down (at stupid expense, from the Netherlands!) one of these
LM Technologies, Bluetooth Sport watches.
I finally got it to link after I heard about entering "0000" as the PIN code in the iPhone Bluetooth settings – there was no mention of codes in the watch directions. And it did vibrate when I called my phone, cool! And when I walked away from my phone, it vibrated at about 50 feet away to let me know I left my phone somewhere. Neat.
But, I don't know how robust the connection will be. If it's a pain to keep set up or isn't really reliable, it won't be worth the trouble. And the watch itself isn't the greatest. It lacks basic watch features: no back-light, and no date indicator – I'm surprised and disappointed missing those. It's large on my thin wrists too but not heavy – somebody needs to shrink those radios and stuff.
So, if you're in the UK, you can order these online. I don't think they're sold in North America. The company also offers a simpler wrist bracelet which has the vibrate alerts, and is way cheaper and more available. That might be a better deal until somebody comes out with a real iPhone watch. Come on Somebody....