COMFAST B02 USB 2 in 1 Bluetooth-compatible 5.0 Dongle Adapter Music Audio Wireless Receiver Transmitter for Speaker Mobile Phone Feature: 1. Equipped with high-performance Bluetooth-compatible 5.0 chip, which can achieve faster transmission speed, more device connections, and more stable transmission conditions. 2. Can be used to connect Bluetooth-compatible speakers, printers, game controllers, mobile phones, keyboards, mice and other electronic devices to meet the needs of various users. Watch videos, listen to music, play games... Enjoy wireless life. 3. When the computer is connected to the mobile phone/tablet, no data cable is required, and the Bluetooth-compatible is turned on for direct transmission. 4. Automatically memorize connected Bluetooth-compatible adapters. After the first pairing is successful, subsequent boots will automatically recognize the connection. 5. Compatible with a variety of Bluetooth-compatible versions, for Win8 and above systems are free of drive, and can be adapted to 4.1/4.2/5.0 versions of Bluetooth-compatible. 6. Search htt://comfast.cn/, click "Download Help", enter "CF-B02 Bluetooth-compatible adapter driver" in the search box, click to download and install. Specification: Model: CF-B02 Chip: RTL8761B Bluetooth-compatible version: 5.0 Frequency range: 2.4GHz (2402-2480MHz) Transmission distance: 0-10M Rated voltage: DC5V Interface type: USB Product size: 14x6x22mm Operating system: for Win7 / Win8 / Win8.1 / Win10 (systems above for Win8 are free of drive) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 

1*Bluetooth-compatible adapter