I have bought the ZX600 for Gigaset A400 - a total bad buy! The connection to the phone via Bluetooth goes smoothly. In order to make calls is not fun. It should be used only in silent environment at all, and then the sound quality is so bad that you badly hears the interlocutor and he has the ZX600 users also constantly ask to repeat itself ... The reception between phone and headset is very bad. There is not even an undisturbed reception when standing next to the transmitting station of the phone and hold the phone in his hand. If an incoming call and the ZX600 has previously logged in to the phone, you can not directly accept the call on the phone, it must first take special on the headset. If I sign it, and my wife does not know that the headset is registered, then she hears simply nothing on the phone and the caller hangs up then at some point! More need not be said - senseless electrical ...
