It is a wireless technology standard that enables short-range data exchange between fixed and mobile devices. Applying Bluetooth technology to hands-free headsets allows users to avoid the annoying wires.
It is based on the mobile phone supporting the A2DP Bluetooth stereo protocol. Only the mobile phone supports the A2DP Bluetooth stereo protocol, and you can connect the stereo Bluetooth headset to enjoy the Bluetooth headset music.
The single ear type is mostly a wireless and compact style that can be worn directly on the ear to achieve a better quality call environment. Especially for car owners, it is safe and convenient to wear this kind of Bluetooth headset when traveling.
The difference between a true wireless Bluetooth headset and a traditional Bluetooth headset is that it uses Multiplexlink technology. The wireless connection between the left and right ears is realized, and the left and right earbuds can work independently, and the hands-free call is under control.
The standard transmission distance is 10 meters, and the distance between the mobile phone and the Bluetooth headset is not too far. The transmission quality is very good within 7 meters. A breakpoint will occur if it exceeds 8 meters, and the connection between Bluetooth devices will be lost if it exceeds 10 meters.
There are 2.0, 2.1, 2.1 + EDR, 3.0, 4.0, and 4.1 versions on the market. There are also differences when applied to Bluetooth headsets.
Specifications (HSP, HFP, A2DP)
HSP provides basic functions required for communication between mobile phones and headsets. HFP adds certain extended functions on the basis of HSP, which is used to fix a car hands-free device from a Bluetooth headset to control mobile phones. A2DP is compared with HSP and HFP's Mono encryption is much better.
NFC evolved from the integration of non-contact radio frequency identification RFID and interconnection technology. Bluetooth headsets that support NFC function can be paired with a single touch with a NFC-enabled phone, eliminating the traditional tedious pairing process.