12 in 1 Adapter: The appearance is exquisite. Using Bluetooth compatible 5.0 chip design, strong compatibility and stability. Bluetooth compatible receiver (RX), Bluetooth compatible transmitter (TX) 2 in 1 design, toggle switch to switch quickly. 2LED Digital Display: Equipped with HD LED digital display, working status and Bluetooth compatible mode are clearly visible. Built in digital to analog chip, supports 6 signal interfaces of digital optical fiber, coaxial, AUX, RCA, U disk, and memory card. 3NFC Function: Upgrade the NFC function, the mobile phone can connect with one button. Cool breathing light, red blue color, soft and not dazzling. Support Format: MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G726/MTY. 4Rechargeable Lithium Battery: Built in 500mAh rechargeable lithium battery, long battery life. Support USB (U disk), memory card playback and transmission. Support 58m / 1626ft infrared remote control, all kinds of functions are readily available. 5Compatible Devices: For Android, for iOS system mobile phones and PAD, active speakers, power amplifiers and Bluetooth speakers or earphones that support A2DP protocol are connected for use. Built in HD microphone, support wireless music listening, hands free call, navigation. Item Type: BluetoothTransmitterReceiver Material: Plastic Model: M8 Bluetooth Version: Bluetooth V5.0 Support Protocol: RX: A2DP AVRC TX: A2DP Working Frequency: 2.402GHz -2.480GHz Power Class: Class II Sensitivity: -85dBm 1 x Bluetooth Compatible Adapter 1 x Type C Charging Cable 1 x 3.5mm AUX Cable 1 x Red and White RCACable 1 x English Manual 1 xRemote Control