Yes, the CoolStream Duo does work with the iPhone 7. The Duo also works with iPhone 6 and iPhone 5 that have been upgraded to iOS 10.
The CoolStream Duo will work with any smart phone as they all have Bluetooth function. The CoolStream Duo supporting Bluetooth music streaming from you phone to your favorite docking station.Continue reading: Does iPhone 7 and iOS 10 work with Duo?