There are three or four watches out, and probably more in the planning phase. InPulse, WIMM (http://www.wimm.com/platform-concepts.html) are the two that spring to mind...anyone have any idea which is better in terms of battery life, small size, expandability?

Edit: Sony SmartWatch should be coming soon, too (http://androidandme.com/2012/01/news/hands-on-with-the-sony-...).