advantage
1. Portable function: It has the portability of wireless devices. At the same time, professional Bluetooth headsets have functions such as redialing, call retention and rejection, which are more powerful than wired headsets.
2. liberation of both hands: you can open your hands to do other things, save the shackles of wiring, you can answer the phone while continuing the busy things.
3. is conducive to people's health: within a acceptable range, let the phone outside the body on the handbag or table.
4. driving is more secure: you can achieve wireless hands-free function, it is very convenient to pick up calls and listen to music.
Disadvantage
1. long-term wear will be uncomfortable: long-term use of headphones to listen to the phone or music, the auditory nerve stimulation of the eardrum is greater.
2. wearing stability in general: in the stability and lightweight type is not enough to deal with most of the environment, and many of the signal instability.
3. the button is small and not practical: the button is small, the phone must be pressed to answer the call, sometimes the button fails to accept a lot.
4. not suitable for listening to high-quality music: At this stage, the wireless transmission capability is basically ok, and the sound quality and endurance capacity still have a lot of room for improvement.