Ah, this question mark means you are experiencing a rare connectivity issue. This is something we are working to resolve - it only happens when you first connect and never during a performance. You can follow these steps below to resolve the issue and prevent it from happening again soon.
Open the NKTW app and go to the settings menu.
Click "Unpair Watch" and close the app.
Go to your phone's settings and forget the Turner Watch from your list of Bluetooth devices.
Reopen the NKTW app and reconnect your watch.
For more info on the Turner Watch battery, check this article.