Bluetooth Version 5.3 for enhanced connectivity High-quality audio decoding with ES9018K2M chip Supports multiple audio encoding protocols including aptX-Adaptive and LDAC Versatile audio output options: Coaxial, Optical, and RCA Compact design with dimensions of 96 x 66 x 24.5 mm, ideal for various setups Model: BDC-U Bluetooth Chip: QCC5171 Audio Input: Bluetooth/USB Sound Card Input Operating Voltage: DC12V/USB Type-C 5V Transceiver Chip: WM8804G Color: Silver Material: Metal Package Contents: 1*Decoder Only the above package content, other products are not included. Note: Light reflection 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.