Binary Clock Widget is a Sony Smartwatch 2 (SW2) clock face widget that displays the time using binary-coded decimal (BCD). It includes both a 5x4 size standard vertical BCD style display and a 5x3 size horizontal sexagesimal widget. The widget is optimized for low power mode and has a small app size.

To read the LEDs on the widget, you can refer to the instructions on how to read a binary clock on the Wikipedia page or the diagrams provided.

Installation is simple. Just download the app from Google Play and open the SmartWatch 2 configuration app by clicking the "SmartWatch 2" notification in the notifications bar. From there, you can create a new watch face or edit an existing one. Choose the Binary Clock Widget from the list of watch faces, selecting the size you prefer.

Overall, Binary Clock Widget is a useful and customizable clock face widget for Sony Smartwatch 2 users who prefer a unique way of displaying the time.

Note: This app is not affiliated with or endorsed by Sony or Sony Mobile.