... + Filter + X’Tal. + PCB antennaWireless communications module conforming to Bluetooth version 2.1 + EDR, class I. UART, USB, PCM, ... , no external battery charging IC is neededUp to 7 actives devices and up to 3 SCO and eSCO ... links and up to 7 ACL linksScatternet supported16 bits stereo audio CODEC 95dB ... automotive hands free, wireless speaker, and wireless Microphone bluetooth pcb