Love song square dance speaker OK

Particularly poor quality, I bought two in the physical store, less than a 冃 are bad, one with a press fitness failure, a radio and Mp3 switching can not be played normally, a *** with the same problem microphone suddenly there suddenly no not available, -10 degrees can not be used, after freezing must be defrosted in order to use the battery is not enough to use up to 4 hours, the battery is not user-friendly can not be connected to a 12v car battery, a 9V pervert! A major flaw in the design of the battery, and all market batteries are not phi with, not durable, not good with, can not be connected to the external, the whole machine does not use more than 3 months, the technology is not mature,