Wireless Digital Analog 2 In 1 Bluetooth Audio Converter Easy To Use Description: 2-in-1 audio adapter: digital to analog audio converter and Bluetooth audio receiver Input output: Bluetooth 51 receiver, optical fiber, coaxial input, Aux, RAC output Bluetooth 51 smart chip: with more sensitive transmission and stronger signal Connect 3.5mm audio or RAC audio interface Sound without Bluetooth can also be played wirelessly Optical TV for sound: the sound quality is full and clear, creating a beautiful home theater Modeled one-key switching work indicator: Press and hold the key to switch mode Blue light in Bluetooth mode Red light D / A conversion Specification: Name: 2 in 1 audio converter Bluetooth version: 5.1 Black color Material: ABS plastic; Transmission distance: less than 10m Power port: USB C Frequency response: 10Hz-20kHz Signal to noise ratio: over 110dB Output: RCA 3.5mm Support: A2DP/AVRCP Input: optical fiber / coaxial Size chart: 52 x 65 x 20mm / 2.05 x 2.56 x 0.79 inch The package includes: 1 piece 2 in 1 audio converter 1 piece audio cable 1 piece Type-C charging cable 1 piece of instruction