Excellent for wireless one-to-one connections. But before purchasing Senheiser I was told that this device could work with multiple receivers, however after receiving two devices we realized that this was NOT the case. We have contacted Sennheiser again to clarify and were told this is a custom device ONLY. Unfortunately we had to return two devices as they did not match what we were told. If you need a one to one service, this is a GREAT BUY!