1、[Bluetooth Receiver & Digital Optical Coaxial to Analog Converter] The converter can freely receive most Bluetooth, convert digital to analog signal. You can wirelessly transfer music from your phone to your device. 2、[All In One Device] Bluetooth receiver, digital to analog converter, U disk playback adapter. About 20m / 66ft barrier free transmission, stable signal. Bluetooth 5.1 transmission is clearer. 3、[Supports U Disk Playback Volume Adjustment] Support U disk lossless decoding and playback, no driver required. Support volume adjustment. Wired to wireless, turn your wired speaker into a Bluetooth speaker. 4、[Basic Parameters] Aluminum alloy shell material; 75Ω output impedance; Bluetooth 5.1 version and decoding chip; HiFi level performance; A2DP/AVRCP support. 5、[Wide Applicability] Suitable for TV, game console, CD player, MP3, etc. It perfectly solves the limitation of equipment and expands the functions of various equipment. Item Type: Bluetooth DAC Converter Material: Aluminum Alloy Shell Model: D18 Bluetooth Version: 5.1 Bluetooth Name: D18 Output Impedance: 75Ω Decoding Chip: Bluetooth 5.1 Effective Distance: Approx. 20m / 66ft Performance: HiFi Level Support: A2DP/AVRCP 1 x Bluetooth Receiver & Converter 1 x Charging Cable 1 x Coaxial Cable 1 x AUX Cable 1 x Manual