Description: AUX RCA audio input and output: It has AUX RCA audio input, axis output interface, coaxial optical digital audio input interface, and audio interface that can play USB TF card. High-definition display: The machine has a white high-brightness digital LED display, which is clear at a glance for the current mode and use status. More convenient and precise control. NFC connection: NFC near-field induction connection makes connection more convenient and accurate, fast. With receiving, transmitting composite function. Infrared remote control function, voice broadcast function. Built-in high-definition digital-analog chip: up to 6 audio input/output interfaces, optical fiber + coaxial + 3.5mm interface + RCA red and white interface, which can easily meet all kinds of equipment. Support U disk and TF card: Play anytime, anywhere, compatible with ≤64GU disk or TF card, plug and play, stereo, no need to download drivers. Specification: Transmission rate: 12.80Mbps Effective working radius: 10m Standard: 5.0 Operating frequency: 60MHz Interface: TYPE-C Electric capacity: 500mAh Audio Input: Optical, Coaxial, RCA, AUX Audio output: RCA, AUX Support sampling rate: 32/44.1/48/96KH2 Audio Support Format: WAV/FLAC/MP3/APE/MAV Size Chart: 92x65x20mm/3.62x2.56x0.79inch Package Includes: 1x Receiver Transmitter 1x 3.5mm Aux Audio Cable 1x Type-c Charging Cable 1x RCA to Audio Cable 1x Remote Control 1x Manual