My research led me to Libratone’s Zipp 2 and Zipp Mini 2 wireless speakers ... and see at a glance whether the microphone used for Alexa is active, and how much charge each speaker’s battery has left.

Infinity - JBL Fuze Pint, Wireless Ultra Portable Mini Speaker with Mic, Deep Bass ... you can expect this speaker to last long. Mivi Roam 2 Bluetooth 5W Portable Speaker,24 Hours Playtime ...