Features: 1. Bluetooth Reception & Digital-To-Analog Conversion U Disk To Play Three-In-One, Bluetooth, Coaxial, Optical Fiber, U Disk, Aux2. New Experience, Open Up Smart Life3. Multi-Device Expansion, Bluetooth Receiving Mode & Optical Fiber Coaxial Digital-To-Analog Conversion4. Wired Seconds To Wireless, Let Your Speaker Upgrade Bluetooth Speaker5. 20m -Free Transmission, Stable Signal, Low LatencyDescription:Bluetooth Version: 5.0Model: D18Mode: Coaxial/Optical Fiber/U Disk BluetoothPower Input: 5vSize: 5.9 x 7.1 x 2.5cmInterface: Aux Usb Coaxial ToslinkTransfer Rate: 2500 (Mbps)Working Frequency: 2400(Mhz)Effective Working Radius: 20(M)Material: Plasticcolour: As shownPackage Contents:1 x Receiver1 x Remote ControlOnly 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.