A:AnswerThey last about 20+ hours on a full charge, when using noise canceling; they last longer when not using noise canceling. And when not using them at all, the battery doesn’t really drain at all.
A:AnswerApple’s original warranty is 1yr parts and labor. Really, it’s just $59. You’re buying a potentially $600 pair of headphones. AppleCare+ is definitely worth it, because if you need it and don’t have it, you’re in a BIIIIG pickle.
A:AnswerI know for a fact they work with Teams. Avaya, as long as it's a softphone, it ~should~ work. The actual phone should work as well, as when you put the Max's into regular pairing mode they work and pair like regular bluetooth headphones. But don't take that as a purchase measurement. They MAY not work. I cannot guarantee you this.
A:AnswerYes, you can make/receive calls and text messages with these in multiple ways. Incoming calls can be answered by saying yes/no or using the button on the right earcup. Incoming texts are automatically read to you and you can use your voice to reply and say what you’d like to text and send it. Also, you can hold down the button and it activates Siri and you use it like normal. The call quality is great; it does a good job at filtering out ambient noise for the other person you’re calling so they only hear your voice. It’s one of my favorite headphones for calls/texts and it’s quality for calls is great.