There are three buttons on the controller: on / off, forward / backward. Off key is used to answer the phone or hang up, turn on or off (press for 2 seconds) or put into pairing mode (press for 5 seconds). The forward / back buttons are also used to control volume if pressed maintains.
Pairing with my iPhone 6 Plus is done quickly and without any problems. Musical quality is at the rendezvous: compared to other solutions that I used before, no interference, no engine roar ... just music.
Regarding communications, it works just as well as the original system.
On each restart, the FRiEQ automatically reconnects to the last device it was connected, which is great. By cons, small problem, it does not affect road alone, it's too bad: you have turned on again by pressing the "FRiEQ" for two seconds. Otherwise, I could not be happier: it really works perfectly.
A small cheap gadget to add music and hands-free Bluetooth car - provided it has still an auxiliary input minijack and by a cigarette lighter nearby. I recommend it.