Description: Wide application: This wireless receiver transmitter allows you to listen to music wireless and transfer files via bluetooth-compatible. Useful tool: With this bluetooth-compatible transmitter receiver, your computer and laptop can connect to a wireless mouse or keyboard. Easy to use: This USB wireless adapter can be used directly without any driver, when you use it on an OS intended for Windows 8.1/10/11. Good performance: This bluetooth-compatible USB for dongle is designed with an antenna that can increase the transmission range, stability and strength. Portable: This wireless USB for dongle is small and lightweight, so you can easily carry or store it when going out. Specification: PCBA size: Approx. 206x22x11mm/8.11x0.87x0.43 inch. Product size: Approx. 206*22*11mm/8.11x0.87x0.43 inch(folded), 153*68*11mm/6.02x2.68x0.43 inch(unfolded). Bluetooth-compatible version: 5.1. Frequency range: 2.4Ghz(2402-2480MHz). Transmission range: Approx. 0-100m/328.08ft. Rated voltage: DC 5V. Interface: USB. Transmission rate: 230KB/S. Support OS: Replacement for Windows 7/8.1/10/11. Working/storage temperature: 5℃~55℃/-10℃~75℃. Working/storage humidity: 40%~60%/25~75%. Note: There might be a bit of color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Not support intended for Windows XP, intended for Linux, intended for MAC. Intended for Win 7 needs to install a driver. Package Includes: 1 Piece Bluetooth-compatible Audio Adapter.