True wireless bluetooth version 5.0, When you take out 2 Earbuds from the charging box, the individual earbuds will automatically connect to each other. When put it in Charging box, the earbuds will turn off and magnetic function helps it to charge automatically. 3D stereo surround sound, the latest noise reduction, ensures a clear calling experience and high-quality music sound. Wireless stereo, left and right channel seperation,both ear can be used seperately IPX5 Sweat-proof design. You could use this earphone in the sport because it is sweatproof. (Can't be thrown into the water） Power capacity will show on your phone, you can see the power situation anytime, do not worry about the electricity, make your life without worry; One to two connections, can be connected to two mobile phones at the same time Stable and Comfortable: Ergonomic design for sport, workout, running, jogging, hiking, biking, gym etc.