Alexa commands for Bose devices

New users here. Just installed Smartthings Hub v2.0 and connect Alexa and Bose Soundtouch speakers (10 / 20 / 30). I can control the Bose speakers through the Smartthings app just fine and can turn on and off the speaker through Alexa, so I think I have the set up right.

My question is: other than turning the speakers on/off what other commands are available to control the bose speakers through Alexa ?