DLAND New Hot Selling Universal Wireless Bluetooth Handsfree FM Transmitter with LCD Display, Playing Music Functions Bluetooth specification: V4.0 Bluetooth profiles: HSP, HFP A2DP and AVRCP Bluetooth Operating distance: 30 feet FM Operating distance: 15 feet USB1 output: 5V/2.4A(MAX) USB2 output:5V/1A FM frequency range: 88.1~107.9MHz