 Did you know you can see exactly how much power your Rondo 3 has left with AudioKey 2? I'll show you how. To check the battery status of Rondo 3 using the AudioKey 2 app, select Listening Settings from the menu. Tap on the Rondo 3 audio processor icon at the top of the screen. You will now see the battery status for your connected Rondo 3 audio processors, as well as the approximate time remaining. Please note that you can only check your battery status on your phone if Rondo 3 is directly connected to AudioKey 2. Now you never have to wonder how much battery your Rondo 3 has left.