I have the latest version headband. I bought it a couple weeks ago. Does the latest version indicate battery life? I don’t have the headband with me. I’ll have to check it out later.
But I don’t recall the meager instruction manual saying anything about how to check the battery life without using the Muse app.
By the way, I sent the Muse company an email a few days ago, asking them about this. They never answered my email. Not very good customer service, in my opinion. They need to be more involved with customer support. Seems they are more interested in working with the developers. At least that is my impression so far.