With Harmony Wear, you can control your Harmony Hub from your Android Watch.
Each activity has 8 user assignable buttons and a D-Pad that can be configured to send commands to your Harmony Hub.
All development has been tested on a Smart Remote Logitech Harmony Hub. If you experience issues, please do get in touch. There may be small differences I haven't accounted for that can be fixed.
A pro edition is currently in development which will let you add additional control surfaces to each activity and choose from a range of different control surface types. More information will follow.