All Land Networking Car MP3 Player FM Transmitter (Black) New Bluetooth FM MP3 SD Car Reader Transmitter For IPOD Built-in FM transmitter. Support frequency range from 87.5MHz-108MHz With the bluetooth feature, it ONLY supports handsfree call & Call Line Identity. Bluetooth can not play music. Built-in SD/MMC card slot. Support SD/MMC expansion card (Up to 8GB) which is NOT included in the package. Powered by car cigar lighter. Auto power off memory.