 Yes, last year we launched a battery pack cover called Audio Stream, which lets you stream sound from both iOS and Android smartphones. It works with our Sonnet 2 audio processor and even with our first generation Sonnet audio processor. So great news if you haven't upgraded yet. Yes, it's really useful for making phone calls. All you need to do is pair your Audio Stream to your phone, just like you would with any other Bluetooth device. Even when a phone call comes in, you just answer the phone calls normal. The signals stream straight to your audio processor. It's the same for making phone calls. Listening to music is really easy with Audio Stream, no matter what app you like to use. After pairing it, you can just start streaming. And what's especially nice is that Audio Stream lets you listen to music in true stereo for better sound quality.