QZTELECTRONIC Bluetooth FM Transmitter Car Kit Cellphone Holder GPS and MP3 Player USB Charger 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. Digital tube display. Support FM Transmitter: 87.5-108.0MHz, Frequencies. Hands free: Supports smart phone handsfree talking. Voice prompt function. 3.5mm Aux-in plug with micro phone. Car charger with standard USB charging port, output 5V/1A. Broadcast your music while charging phone or iPod MP3 Player.