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The cable of power supply can be swallowed with the K7 in lecteiur.
or to a very limited autonomy and alot of manipulation to ensure charging.

The remote control not easy to use at the Aret and dangerous while driving.

I returned to the K7 with a son on the connected audio out my phone,
Music for hours without having to recharge the maniper for K7.
My "music" that recharge when I recharge my phone ....