IF you have not purchased the Fusion yet - something to know. IF YOUR RADIO IS NOT HARDWIRED FOR POWER ALL OF THE TIME, the fusion does NOT maintain the pair. You have to re-pair EVERY TIME the radio does not have power. We thought we could work with it, BUT, After 1 season, we realized what a "pain" it was to re-pair every time we turn the boat off and put it in accessory mode. We bought a " Premium Marine Bluetooth 4.0 + Aptx Music Receiver made by Exile Audio. Sells on Amazon for $54.99. Works like a dream. Did not "re-pair" all summer. I have a Fusion 100 for sale cheap 🙂