1)Plug FM modulator into vehicle's 12V adaptor 2)Plug you flash memory into FM modulator's USB port 3)Adjust the channel setting if the signal is interfered in your area (87.7, 87.9, 88.1, 88.3, 88.5, 88.7, 88.9MHz) or (106.7, 106.9, 107.1, 107.3, 107.5, 107.7, 107.9MHz) For u...
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