The advantage of a half in ear real wireless headset is to wear it without feeling. Even if you use it for a long time, or even if you sleep and listen to music, it will not cause discomfort. This is very suitable for people with sensitive ears. Of course, it also has some disadvantages. For example, because the sealing between the headset and the ear is not very high, it is not very sound-proof when used outdoors, but I think It may also make you safer when you use it outdoors.