Sony Ericsson reps tell us it can store 255 widgets, most of which will interact with your Android 2.1+ Sony smartphone (some work with Android phones, period, and others run all on their own) and that it will be on sale at an unspecified date for $149.
Sony Smart Watch (aka Sony Ericsson LiveView 2) hands-on | The Verge
Sony Smart Watch (aka Sony Ericsson LiveView 2) hands-on | The Verge