
I bought this to replace the one in the M6 bluetooth combo (which was phenomenal) but had the following problems: 1. Often the signal is lost and about 50% of the time it's possible to reconnect .2. If the connection could not be reestablished, the connection will never be reestablished.3. Several times when I used the device and it was running, the battery died after about 3 hours; which is totally unacceptable (my previous one would have taken over 6 hours). I am assuming the unit they sent me was faulty and I will be going through an RMA (which is more difficult as this is sold by Revain Services).

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