1.Receiver Mode 2. mitter Mode 3.DAC:Change Digital Audio To Analog Audio 4.HiFi Music 5.Bluetooth/3.5mm Audio Cable/RCA Cable/Spdif Cable /Coaxial Connect Bluetooth protocol support: A2DP and AVRCP mission distance:15M (open area) Input: AUX Fiber Coaxial Bluetooth Output: RCA AUX bluetooth Compatibility: Bluetooth device settings such as Android system mobile phone of for IOS system, tablet TV game machine and audio device with any audio input interface Audio Interface: 1. Audio codec with 16bit stereo DAC and 16bit mono ADC; 2. Support flexible audio EQ adjust; 3. Support Sample rate 8,11.025,12,16,22.05,32, 44.1 and 48KHz; 4. 2 channel Stereo Analog MUX; 5. One channel MIC amplifier input; 6. High performance mono audio ADC with 90dB SNR Material:Aluminum alloy colour:black Package Contents: 1 * Bluetooth Adapter Digital Audio Converter 1 * Audio Cable 1 * Micro-Charging Cable 1 * Spdif Cable 1 * RCA Cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.