Version: 5.3 BR+EDR,BLE Support 5 bluetooth devices at the same time Transmission distance without obstruction: 20M(Max) Max. RF Output Power: 4dBm (EIRP)*Frequency: 2.402GHz-2.480GHZ Do not support APPLE Device Material: ABS LED indicator support Bluethooth Profiles:A2DP/HSP/AVRCP/HID/PAN/GAVDP/DID/IOPT Compatible systems: Windows8.1/10/11