a Logilink and a "structurally identical" Pearl, both in conjunction with a Gigaset. Pairing, use, listening and speaking is impeccable. From his phone you should still be removed no more than three meters, about one of the partners is understood only through choppy. Only compared to the spring Pearl of the headband is slightly firmer, it shows only in direct comparison and it is not unangehm. Otherwise I would have given the headset back.