1.Original 1:1 classic TWS,all function,in-ear detection,fenestre pop-up,name definition and GPS,realis potentiae practicae percent. 2.Engaged with GL 6936D8 plani stabilis et maturae qualitatis. 3.Precise in-aure detection-wear to play and take out to pause. 4.lever operation,song switch,volume adjustment, voice assistant, quick and convenient operation . 5.Engaged cum diaphragmate anulus aeris sonus loquentis clarus.