Description: 2 in 1 Design: Transmitter (TX) and receiver (RX) 2 in 1 design, built in DSP decoding chip, heavy bass effect, lossless stereo, low latency. Support treble/bass button adjustment. With LED digital display screen, the working status mode is clearly visible. Stable Connection: The AUX adapter uses V5.1 chip design, stronger compatibility and stability, 30 meters barrier free stable signal transmission. Support function, connecting when the mobile phone is close to it. Multi Interface: The wireless audio adapter supports USB/TF card, support MP3/WAV/WMA/APE/FLAC/G729/M4A/ALAC/AMR/DTS/MIDI/G72/MTY format. Built in 6.5mm microphone, supports microphone access for singing. Remote Control: Support 5-8m remote control, freely adjust mode/signal/volume/up and down music/mixing/microphone, etc. Controllable indicator light, soft and not glaring, the brightness of the light increases/decreases accordingly with the volume. Wide Application: The transmitter receiver can easily support all kinds of audio equipment, suitable for mobile phones, tablet, active speakers, power amplifier, desktop computers, mixers, TVs, etc. Specification: Product size: 9.8cmx6.7cmx2.35cm/3.86inchx2.64inchx0.93inch Material: ABS plastic Version: V5.1 Support protocol: A2DP/AVRCP/HSP/OPP/GATT/SM Signal-to-noise ratio: 90dB Power level: Class II Distortion: ≤0.1% Interface Type: Input: 3.5mm AUX+RCA+USB+TF interface+6.5 MIC Output: 3.5mm AUX+RCA Working current: