I had previously been a Bluetooth clip, in which after a year now but unfortunately the battery is in the bucket (It involves the BCK-08). In this I also had problems with the reception in the open field. If things are around you, then the connection was great, because the clip could remain above reflections with my phone contacts, but if this possibility did not exist, the signal (clip was too bad, because my body in the way is left on the neck , mobile phone right in your pocket).
This problem has the MOCREO Clipper NOT! Are Clipper and transmitting device (eg mobile phone) on the body, is the connection 1A.
Even if the phone is in the next room, the music goes on smoothly. It was not until two partitions the signal was getting too weak.
My experiences relate with two clips to connect to a Nexus 5 smartphone.
How it "up to 8 hours' duration with the looks, I can not comment on as I have always used the clip only about 3 hours and then recharged.