Features: Bluetooth-compatible transmitter adapter, you can use it on the TV/computer /TV box/PS-/Switch-. DAC converter,supports signal conversion from digital optical coaxial audio to RCA3.5mm or R/Lanalog audio. U-Disk-play,no need driver,plug- and play- ,support MP3/APE-/FLAC/WAV/WMA music format. Remote control,you can use the remote to control the adapter,easy to use. Supports to pair with mobile devices (such as mobile phones, tablets) via Blue tooth for audio transport.Make the older speaker devices work like the Bluetooth-devices. Specifications: Material: aluminum-alloy Size: approx 107x52x21mm/4x2x1-inch Bluetooth-version: V5.1 Input power: DC5V Transmission distance: within 30 meters= Power supply mode: type-c Package Includes: 1xDigital-to-analog converter note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.