Wearable Widgets runs well on any generation of Sony SmartWatch (but doesn't support the original LiveView, sorry). All you really need to do is install our app on your phone; you probably already have Sony's Smart Connect app installed and configured. If not, do that now.
Please note that if you have the SmartWatch 3, you’ll need to use our Android Wear interface, rather than following the instructions on this page.
On the SmartWatch 1 and 2, however, just run Wearable Widgets once on your phone and select a widget from the list that pops up. The app should automatically select your SmartWatch as a recipient for your widget. To see it on your wrist, simply tap the icon on the watch's home screen, and voila!
Wearable Widgets also supports the SmartWatch 2's low-power mode (LPM), which keeps the app visible on the screen after the watch's backlight turns off. This effectively lets you use any widget as a replacement watchface on the device.
To activate LPM, go into the Settings in Wearable Widgets on your phone. Under the SmartWatch 2 area of the Wearable Devices section, turn on Use as "watch face". You'll need to reboot your phone, and possibly your watch as well, before this change will take effect.