New and high quality!Feature:1. Support multiple devices to connect at the same time: support multiple Bluetooth compatible devices to connect at the same time, solve the USB gap problem and meet different occasions.2. Run free for Win8 and above, plug and play: Win8.1/10/11 run free, connect to support Win7 (device required).3. Compatible with multiple Bluetooth compatible versions: downgrading of 4.1/4.2/5.1 Bluetooth compatible versions.4. Universal: Wireless devices such as keyboard, mouse, speaker, printer, gamepad and more.5. Small and light: Bluetooth compatible 5.1 adapter is small, light, does not take up much space, easy to carry or store. Description: Transfer rate: 3 (Mbps) Effective working radius: 10 (m)Bluetooth standard: 5.1 Work frequency: 2.4 (MHz) Materials: ABS plastic Color: As ShownSize: Reference picture The package includes: 1 PC Note: 1. Please allow 1-3mm error due to manual measurement.2. As different computers display different colors, thank you for your understanding, the actual product color may be slightly different from the picture.