Description in English:
After a simple Bluetooth pairing, they will connect automatically once you open the case; you can listen to music or make phone calls when wearing them. Infrared sensor can sense when the earbuds are in your ears and when you take them out. Adopts balanced armatures + dynamic drivers with independent equalization (EQ) adjustment to achieve crisp treble, natural alto & deep bass.  Adopts AAC technology to improve transmission efficiency and present more details.