Huawei FreeBuds 2018 Earphone True Wireless Bluetooth Earbuds Black 

• 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.
• Built-in G-Sensor that simplifies every operation into an elegant & efficient double-tap.