Using the audio receiving and transmitting two-in-one design, this adapter is plug and play, drive free, easy to use, can be widely compatible with a variety of devices. Adopting Bluetooth-compatible 5.3 technology, the adapter has dual-mode low-power transmission, long transmission distance, and strong signal, easy to use, and powerful. It is constructed of ABS material. The length of this audio adapter is 7cm, the width is 2.4cm and the height is 1.2cm. It can be used for computers and mice. Item Name: Audio Adapter Material: ABS Interface: USB + 3.5mm Whether Plug And Play: Plug And Play External Power Supply: External Power Supply Available Transmission Rate: 100Mbps Effective Working Radius: 10 Meters Bluetooth-compatible Standard: 5.3 Operating Frequency: 2.4MHz Transmit Mode Input: USB+AUX Receive Mode Input: USB+AUX Features: Stable Signal, Intelligent Compatible, No Drivers Needed Size Details: Size: 7cm x 2.4cm x 1.2cm/2.76" x 0.94" x 0.47" (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 Receiver 1 x Audio Cable 1 x User Manual