I received and tested the module today, and it works fine! It has very little latency as it is bluetooth 4.1. I had zero problem connecting to the device. I found out a couple of minor drawbacks though. It beeps whenever I change volume on iPhone. Like most of bluetooth devices, it becomes idle when iPhone doesn't send a signal. I believe it beeps when I change volume because it stops idling as iPhone sends a signal. Bluetooth devices are meant to be mute when volume of iPhone, for example, is set to zero. However, it is still mute when my iPhone's volume is set one step above zero, which means that I lost one minimum step of volume. I could hear small and constant noise which is not too bad but perceptible. I don't know where it is coming from, but there it is, while my other device is dead quiet. I happily received the package today, but I was a bit frightened because it was packed only with a single sheet of bubble wrap in a plastic wrap. As I know, it's traveling from the other side of the globe, and fortunately it made it. But wouldn't it be safer if you protect it at least with something like cigarette pack? Just out of concern. So, questions here: Is there a way that I can get rid of beep sound using COM/PP or Volume pins by any chance? How can I use COM/PP and Volume pins? Any idea that I can get rid of the noise? Generally I am satisfied with the product. Thank you!