Usb Bluetooth-compatible Adapter 4.0 Receiver Laptop Csr4.0 Audio Black

Description

--Adopt CSR chip, in line with Bluetooth 4.0 technical specifications.--Low-latency fast link, intelligent sleep wake-up and energy saving, 24-bit CRC check to resist interference, adaptive frequency hopping to reduce crosstalk.--The USB2.0 interface is more versatile, and the mini body is portable.--USB bus power supply, no need to switch power, LED indication.--Ultra-thin and lightweight, built-in antenna, no USB connection, easy to use and carry.