Logitec Bluetooth2.1 Audio Transmitter USB black LBT-AT100C2 F/S

Got it time from Japan. Synced correctly with my JBL Reflect BT earbuds. I bought this transmitter to connect it to my USB recording interface and listen my electric guitar, but there is 1 second delay between I play the guitar and the moment I listen the sound through my earbuds; however to reproduce music is perfect!!!...I think the product is excelent, it sounds clear as signal was reproduced through a wired connection.The issue about the delay for rehearsal is not really and issue, maybe bluetooth is not the technology for this kind of application.I recommend the product!