Connect your iPhone to the Bose Wave Radio with the CoolStream Duo Bluetooth Kit for Bose Wave Radio.
Connect the Duo using the RCA cable.

Use the battery in the Duo.
Using the charged internal battery of the Duo, you can slide the switch on the top of the Duo over to the left and stream music from your phone or tablet to your Wave Radio. Use the button on the top of your radio and set it to Aux.

Keep your Duo fully charged all the time.
Since the Duo’s rechargeable battery receives power from the 30-pin connector, you will have to charge your Duo periodically. For this reason, we include a traditional Apple 30-pin charging cable along with a single port USB wall charger to keep your Duo constantly powered for easy streaming on demand.
For Bose Wave Music Systems with an Aux Port.
Use that AUX!
The Bose Wave Music Systems, the Bose Wave Radios II, III, and IV are compatible with the CoolStream Kit for Auxiliary Ports. Check compatibility for your stereo and enjoy music streaming from any iPhone or Android phone to your Bose.