Tips: ZF360B With Microphone,Support Handsfree Calling When RX Mode.(TX Mode Don't Support) ZF-360B 4-IN-1 Bluetooth Audio Transmitter Receiver: ZF-360B is a Bluetooth transceiver developed with the latest Bluetooth version 5.0. This product can be used as a Bluetooth audio transmitter to wirelessly transmit the sound of TV and other audio sources to Bluetooth headsets or Bluetooth speakers (on computers and Android systems). Under, support the direct transmission of audio with data lines, without the need to plug 3.5mm audio cable). It can also be used as a Bluetooth audio receiver to instantly turn a wired speaker into a Bluetooth speaker, freeing you from the shackles of cable and enjoying wireless music.