Bluetooth technology was originally developed by Ericsson in 1994. It is a method to research low-power and low-cost wireless communication connection between mobile phones and other accessories. In 1997, Ericsson approached mobile device manufacturers with this concept to discuss the development of their cooperative projects, which was supported. In May 1998, five well-known manufacturers, including Ericsson, nokia, Toshiba, IBM and Intel, jointly proposed bluetooth technology in the standardization activities of short-range wireless communication technology. Compared with other wireless technologies, such as infrared, wireless 2.4g and WiFi, bluetooth has many advantages, such as perfect encryption measures, stable transmission process and abundant compatible devices. Especially in the licensing threshold gradually lower today, bluetooth technology began to truly spread to all digital devices.
The first generation of bluetooth headset is the business Bluetooth Headphone, which can be understood as the convenient bluetooth headset. In fact, in the beginning, the main crowd of Wireless Bluetooth Headset was business oriented. First of all, bluetooth headset is to apply bluetooth technology to hands-free headset, so that users can get rid of the annoying wires and talk freely in various ways, which is a good scenario for business people. Secondly, the single-ear bluetooth headset is the emerging product of bluetooth headset. At the beginning, it was not used to listen to music, so even if the mobile device does not support A2DP bluetooth stereo protocol, it can also use the single-ear bluetooth headset. This kind of earphone can only be used for calling, hanging up, vo