Features: 1. Wireless Bluetooth Adapter, Plug And Play Wireless Life 2. Supports Simultaneous Connection Of Multiple Devices, Allowing The Computer To Connect With Other Bluetooth-Enabled Devices 3. Connect The Computer To The Bluetooth Speaker, And Listen To Music Wirelessly Easily. Move The Bluetooth Speaker At Will And Enjoy The Three-Dimensional High-Definition Sound Effect. 4. Connect The Computer To A Bluetooth Headset And Listen To Music Wirelessly Easily. Put Aside The Constraints Of Traditional Wired Headsets And Enjoy The Freedom Of Wireless Music. 5. Compatible With Multiple Bluetooth Versions, Can Be Adapted To 4.1/4.2/5.1 Bluetooth Versions Description: 1. Product Name: 5.3 Bluetooth Adapter 2. Bluetooth Version: 5.3 3. Frequency Range: 2.4Ghz (2402-2480Mhz) 4. Transmission Distance: 0~20m 5. Rated Voltage: DC5V 6. Interface Type: USB 7. Operating System: for Win7, Win8, Win8.1, Win10, Win11 (Win8 And Above Systems Are Driver-Free) Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Material: plastic colour: As shown Package Contents: 5 x USB Bluetooth Adapter Only 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.