3 in 1, Bluetooth receiver (RX), Bluetooth transmitter (TX) and FM transmitter The high-definition microphone supports wireless music listening, hands-free calling, and navigation High-definition LED display, working status and Bluetooth mode are clearly visible Support digital optical fiber, coaxial, AUX, RCA interface Upgrade the NFC function, connect the phone with one-touch 500mAh rechargeable lithium battery, long battery life Support USB (U disk), TF card playback and transmission, and FM 5~8 meters remote control, no need to drive and download APP Specification: Product: Bluetooth transceiver Type: FM, NFC Model: M6 Plug and play: support Interface: 3.5mm/RCA/USB/TF Transmission rate: 100Mbps Frequency: 2.4MHz Transmission distance: 10 meters Bluetooth: 5.0 Battery: 500 mAh Voltage: 3.7V