Types and versions of bluetooth earphones tws wireless bluetooth earphones

Single-ear Bluetooth headsets are mostly wireless and compact, and can be worn directly on the ear. The main function is to answer and hang up calls, and can control the volume. At present, some models of single-ear Bluetooth headsets also have dual standby, Technologies such as dual microphones and NICAM (can also become noise reduction. It can achieve a better call environment). www.bjbjaudio.com

The stereo Bluetooth headset is based on the mobile phone supporting the A2DP Bluetooth stereo protocol. Only when the mobile phone supports the A2DP Bluetooth audio protocol can the stereo Bluetooth headset be connected to enjoy music. Stereo Bluetooth headsets have neck hanging, headset, clip, glasses and other styles, and the neck hanging and clip styles are wired Bluetooth headsets. The Bluetooth headset also has an LCD guide screen, which can not only easily see the caller number, but also display the song title and lyrics. www.bjbjaudio. com

Bluetooth headset version:
There are V20/21/30/40 applications on the market that are also different when used in Bluetooth headsets. v21 not only supports more stereo sound effects, but also has better performance in stability and effect, and is backward compatible with v20 version. In addition, mobile phones and earphones with Bluetooth function support two connection modes, "Handsfree" and "Headset". Version 21 is an improved and improved version of 20/12. The transmission rate is about 18Mpbs~30Mpbs, and it can have a (duplex) working mode. That is, while making voice communication, it can also transmit files/high-quality pictures. The current Bluetooth 40 has been commercialized. Although many devices have adopted the Bluetooth 40 technology, the corresponding Bluetooth headsets have not been launched in time, and the advantages of Bluetooth 40 cannot be exerted. www.bjbjaudio.com

Radiation from bluetooth headphones:
The output power of Bluetooth products is only 1 milliwatt, which is one millionth of the power used by microwave ovens and one thousandth of the power of mobile phones (mobile phones). Moreover, only a small part of these outputs are absorbed by the human body. The radiation of bluetooth to the human body is compared to answering the phone directly with the mobile phone and trying the traditional wired headset. More green and safe, children and pregnant women can use it with confidence. When using a Bluetooth headset to answer or make calls, the antenna for transmitting and receiving electromagnetic waves from the mobile phone will be far away from the human body, so the effect of radiation on the human body will be relatively weak due to the distance. Using a bluetooth headset does not eliminate cell phone radiation, but it is like a bulletproof vest. Using a bluetooth headset is like putting on a bulletproof vest for yourself. With its protection, when using a mobile phone, the radi ated bullets can be blocked from the human body, thereby avoiding various damages that the mobile phone may cause to the human body. www.bjbjaudio.com