1.Earphone,mp3 ,compute,pc, headset,Neckband,headphone , easy to carry; 2.Comfortable all-inclusive probe covers, ... 1Earphone,mp3 ,compute,pc, headset,Neckband,headphone Mic Dimensions Ø6.0X5.0mmSensitivity `-41dB±3dBlmpedance ≤2.2kΩ ... headset comfortable for daily use.High definition speakers bring clear sound and amazing feeling.Made by professional factory and passed ...