Vktech&reg; USB Auto Car Charger Wireless Bluetooth MP3 Player FM Transmitter Modulator (Pink) Adjustable to any angles,and fit to all types of vehicles Digital display, Full frequency FM transmitter Supports MP3 player audio input Frequency Response:20Hz-15Khz, FM Transmitter Frequency: 87.5-108Mhz Bluetooth Transmission Distance: 10-15 meters