With UBR Wear you can request an Uber ride from your Android Wear watch.

This is the easiest and the most convenient way to request a ride if you own an Android Wear watch. Before using it, you should sign into the UBR Wear app on your smartphone.

After the request has been made, the official Uber app handles the rest, so you can check the status, cancel the ride or call the driver from the official Uber app.