1.Earphone,mp3 ,compute,pc, headset,Ear Hook , easy to carry; 2.Comfortable all-inclusive probe covers, ... 1Earphone,mp3 ,compute,pc, headset,,Ear Hook Mic Dimensions Ø6.0X5.0mmSensitivity -39dB±3dBlmpedance ≤2.2k ... critical quality tests,good in quality. (DH-901)Somic Fashion headphone stereo Earphone