Basic Parametersource from : https://feasycom.com/product-CSR8675-High-End-Bluetooth-Audio-Module.htmlBluetooth module modelFSC-BT806BChipsetCSR8675Bluetooth versionBluetooth 5.0 dual mode(BR/EDR+BLE)Frequency2.402 - 2.480 GHzFeaturesApt-X,apt-X LL,apt-X HD,CVC,High quality audio transceiverProfilesA2DP,AVRCP,HFP,HSP,PBAP,SPP,HID,GATTDimension13mm*26.9mm*2.2mmTransmit power+10dBmAntennaBuilt-in PCB antenna, supports external antennaMain Features: *Chipset: CSR8675; *Bluetooth 5.0 dual-mode specifications*Mini Size : 13*26.9*2.2mm ,Coverage up to 50m(164ft).*Max Transmit Power: +10 dBm; Receive Sensitivity: -88 dBm. *Audio Interfaces: Dual I2S Output/Input Audio Features, SBC and AAC Audio codec*Support HFP,HSP, A2DP,PBAP, AVRCP, MAP,SPP,BLE profilesApplications:* Bluetooth headphone* Wireless sound bars* Bluetooth speakers* Multimedia players* Automotive Hands-Free Kits* VOIP handsets* Wearable audio with sensors(health and well-being applications)