Note:Win 7 need to install drivers.If your computer system is Win8.1/10/11, you do not need to install the driver. It is driver-free for Win8.1 and above system. This product is not supported on Mac OS/IOS system. Bluetooth 5.3 150m Chip: (RTL8761BW) 1. Upgrade Bluetooth 5.3+BLE (LMP:12.45) 2. Compatible with Bluetooth versions such as 5.2/5.1/5.0/4.0/3.0/2.0. 3. Low power consumption, low delay and high-definition sound quality 4.Win8.1/10/11 driver-free, plug and play, Win 7 need to install drivers. 5. Connect once, and connect automatically. 6. Support simultaneous connection of multiple devices 7. Wide compatibility (Bluetooth headset/speaker/Bluetooth mouse/keyboard/Bluetooth handle/printer/Android) 8. External dual antennas, 150 meters distance 9. Support A2DP/HSP/AVRCP/HID/SBC/AAC and other protocols Specifications: Fully compatible with Bluetooth-compatible 2.0, Bluetooth-compatible 2.1, Bluetooth-compatible 3.0, Bluetooth-compatible 4.0 and Bluetooth-compatible 4.2 specifications. Comply with Bluetooth-compatible 5.0 technical specifications, dual mode transmission. Farther transmission distance: 100 meters long transmission distance (no blocking), strong signal. 24Mbps transmission rate, providing stable and high-speed transmission of file and audio data. Intelligent sleep wake-up energy-saving, 24-bit CRC check to resist interference, adaptive frequency hopping to reduce crosstalk. Item Name: Bluetooth-compatible Adapter Material: Plastic + Metal Bluetooth-compatible Version: 5.0 Interface: USB 2.0 Compatible System: for Windows XP/Win7/Win8/Win8.1/Win10 Features: Mini, Plug and Play, High Speed, Easy to Carry Size: 13mm x 14mm x 6mm/0.51" x 0.55" x 0.24" (Approx.) Notes: NOT suitable for all IOS devices including Mac, iPad and iPhone,it can't work in car stereo or TV or Linux !!! 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 Bluetooth-compatible Adapter _x000D_