Audio Adapter Multifunctional Wireless Adapter Mini Transmission Practical Bluetooth-compatible 5.1 USB Dongle Music Receiver Specifications: Featuring plug-and-play installation; you just need to simply plug into your USB port and enjoy automatic installation for setup in under a minute. This user-friendly Bluetooth-compatible USB adapter for PC is the perfect easy-to-use solution!The wireless Bluetooth-compatible adapter; which can connect multiple devices; such as Bluetooth-compatible speakers; keyboards; headsets; and mice; can be fully used to wirelessly transfer files while enjoying music.The adapter is constructed of ABS material.The length of this adapter is 2.5cm; the width is 1.7cm and the height is 0.8cm. This adapter is used for computers and mice.Item Name: AdapterColor: Black Transfer Rate: 3 MbpsInterface: USBOperating Frequency: 2.4 MhzEffective Working Radius: 20 MetersBluetooth-compatible Standard: 5.1External Power Supply: No External Power SupplySize Details: LxWxH: 2.5cm x 1.7cm x 0.8cm/0.98" x 0.67" x 0.31"(Approx.)Notes: Due to the light and screen setting difference; the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes: 1 x Audio Adapter