Compatibe with Bluetooth V2.1 + EDR protocol; Support A2DP / AVRCP / AVDTP / HFP / HSP; Working range is 8~10 meters; 1.0" LCD MP3 player with FM / USB / Mini USB / TF / remote control; Built-in MP3 decoder module; Supports USB flash drive up to 32GB; Supports Micro SD / TF card up to 32GB; FM frequency: 78.5~108MHz; With memory function; Integrated amplifier; Working voltage: 12V.