Universal and modern Bluetooth 5.3 transmitter, the device has a Bluetooth transmitter and receiver, USB input, USB-C input, AUX and 2 RCA ports. Ideal for home theater, car or stereo. High-quality Bluetooth connection does not spoil the sound quality, music is transmitted without delay or loss of quality. The device has a built-in antenna, which allows you to maintain a stable connection even at a distance of 10 meters. Main functions: Universal and modern Bluetooth transmitter is a device with a Bluetooth transmitter and receiver The device works with the latest version of Bluetooth 5.3 Supports two audio ports, works with 3.5 mm, aux and 2RCA audio ports. Operate the device with the multi-function button The transmitter can be connected to any A/V receiver and any speaker with a standard 3.5mm jack or 2 RCA ports, ideal for home theater, stereo and car stereo, also suitable for Apple devices and Android phonesSpecification: Bluetooth version 5.3 Bluetooth protocol: A2DP, AVRG, HFP Frequency range: 2.402GHz - 2.480GHz Frequency response: 20Hz - 20kHz Maximum distance: 10m USB: MP3, WMA, FLAC, APE, WAV SNR: >90dB Dimensions: 83x56.5x25mmHow to useBluetooth: This product does not have a battery and requires 5V USB power Connect the receiver to a power amplifier/sound system using an audio cable Connect your Bluetooth mobile phone to the device, search for: YET-R20, click to pair Play musicPlay music from USB: Insert disc, format: MP3 WMA FLAC APE WAV The music will start playing automatically