Breathable and not stuffy, not worn in the ear, making listening easier and allowing the ears to breathe freely. Ear hanging structure, ergonomic design, for a more stable and snug fit when worn. 0.7mm flexible silk ear hook, meeting the wearing needs of different ear types Directional sound field technology takes care of your privacy. No need to enter the ear, it can accurately and efficiently transmit sound, making listening more private. Charging for 5 minutes, music playback for 1 hour, IP54 level water and sweat resistance, double-layer mesh design with steel mesh and yarn mesh, effectively preventing splashing and promoting smooth movement.