A good solution for an inexpensive upgrade to an audio system for wireless communication. Not a bad sound, I didn’t hear any defects, bass, etc. is configured for itself in the equalizer of the player, it works smartly. The volume is lower than from a flash drive or radio, but aux always sounds like that, plus the "level synchronization" function (if it is in the radio) allows you to increase the sound from aux, and the difference when switching disappears. It happens that the phone loses connection and is treated only by rebooting the phone, but these are apparently issues with the phone, or a conflict when there are two phones nearby that have already been paired with the adapter. There is no built-in battery, but I don’t need it in a car, anyway, the speakers don’t play without ignition.
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