Description: With one-key mode switching, blue light can be received, and red light can be transmitted. Built-in noise reduction HIFI sound quality, no need to drive, just plug and play, which is very convenient. The material is ABS, which is very durable to use. The length of the product is 4.3cm, the width is 2.1cm, and the height is 1.1cm. It is suitable for mobile phones, computers, etc. Item Name: USB bluetooth-compatible Adapter Material:ABS Compatible Models: T02 Input Voltage: DC/5V Bluetooth: V5.0 Interface Type: 3.5mm Working Frequency Band: 2.4MHz Additional Function: Receive Hands-Free Calls Intercom Distance: 10-15m Transmission Rate: 100Mbps Size:4.3cmx2.1cmx1.1cm/1.69inx0.83inx0.43in 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 User Manual 1 X 3.5mm Audio Jack 1 X USB Adapter