Rymemo Wireless Bluetooth FM Transmitter Radio Adapter MP3 Music Player Multi-functional Phone Car Kit Mount Holder Bracket With Handsfree Calling, Cigarette Lighter Charging Port for Cellphones Stand with adjustable smart phone, GPS and MP3 Player holder DSP technology, full duplex, noise and echo suppression Rotating head allows angle adjustments, horizontal or vertical device orientation Car charger with standard USB charging port, output 5V/1A Support FM Transmitter: 87.5-108.0MHz, Frequencies