Great product and great value for money

Corresponds perfectly to the description.
Before buying this product I had a few questions.
1. When plugged into the cigarette lighter, whether once you put the key in the ignition turns on automatically and connects to the phone (if BT is already enabled). Once it is on, so it automatically connects to the last phone with which it was used. By cons it will not turn on automatically when you put the contact because in fact it is on standby and for that you need to wake him with a long support 6 seconds.
2. Whether you can use with multiple devices and automatically connects it (as do most of the BT radio). The answer is nuanced too. He can be paired with two phones (or perhaps more) and connects automatically (without intervention in the phone) to the last phone with which it was used, which is in range. To connect to another phone with which it was used so go to the BT phone menu and select GOgroove. Thus, if in the morning I took the car and I connect the GOgroove, noon when I take the car it automatically joins my phone without that I have to hit it; but if my wife rebuke the car behind it needs to go in the menu of the phone connected to the GOgroove. It is the only "defect" or missing.
Otherwise it is an excellent product. The microphone provided me the same sensitivity as the one built into my other vehicle. The sound of music is very good, as good as if I connect a cable to my phone. Pressing the button starts or stops the music, pressing 2 seconds launches Siri (iPhone) and a pressure of 6 seconds turn off the receiver.
I use it with an iPhone 5S and iPhone 6 and is perfectly compatible with the 2.
USB and audio cables are comfortably long. The small base can be disconnected if we want to connect the receiver to a live audio jack. Decal scratch yours very well supplied. And little tip: in the packing box GOgroove ets fixed on a scratch it is possible to take off properly and stick on the dashboard (or other) and have 2 stickers scratch if we want to fix the 2 different locations.
It's two weeks since I use it, I hope it will be a long life because it is a product that I recommend.