This wireless audio adapter adopts Bluetooth 5.0 technology, the transmission is fast and stable, and it also has noise reduction, stereo, and no-delay sound effects. Bluetooth transmission distance of 10 meters, built-in high-definition decoding chip. Support Bluetooth receiving (RX) and Bluetooth transmitting (TX), two functions in one. Can read TF card/U disk, support mp3/flac/wav/wam/ape format songs. Exclusive mobile phone APP control, up and down song/volume adjustment/sound effect adjustment/playing audio source switching. Support infrared remote control, power on/off/mute/play/pause/up and down music/volume up/down/audio source switching. Support 110~220V power plug-in, which is universally used worldwide. Built-in QC2.0 fast charging module, supports 2.1A dual USB fast charging, easy to charge mobile phones, tablets, etc. This wireless audio adapter features multi-circuit protection, which is safe to use. Suitable for speakers, power amplifiers, car speakers, TVs, desktops, laptops, projectors, etc. Output Parameter: DC5V/2.1A(Max) Bluetooth Version: Bluetooth V5.0 Transmission Distance: 15 meters without obstacles Interface Type: AUX+RAC interface Music Format: MP3/APE/FLAC/WAV/WMA Power Supply Mode: AC100-240V direct plug use Support Protocol: A2DP/AVRCP Various Systems: Support XP/Vista/Win7/8/10 system/IOS Material: PC, ABS Color: Black Size: 103.3 x 58.6 x 30.3mm Weight: 250g Package List: 1 x Wireless Audio Adapter