Unfortunately, the remote release is the problem:
First, no battery case, a CR2032 button cell that one has usually not lying around. So concerned and engaged. The case of the FB and the battery cover are very delicate, to put it mildly. The text on / off tiny and barely legible, would be to get over yet.
Lt. Instructions in Winzschrift the FB switch, blue LED flashes then allegedly waiting for the BT pairing, it does nothing. Rumprobiert, aha, press the shutter button and hold it longer, then the lamp blinks quickly and the FB will be pairing. After several attempts, the iPhone recognizes the FB and bonds, but only for a few seconds, about 3-4 seconds, then comes 'not connected'. At 4S's can not lie, the BT works every day with car telephony, with earphones and also with an iPad mini.
So deleted device in the iPhone, try again, connection found 'not connected' after a few seconds, etc. Can be any number of times and reproduce without success.
Packing, so returned. A great pity, because that part was actually exactly what I wanted. 2 stars for the processing of Selfie-rod and the bracket.