1.Retractable earphone with microphone for PC 2.Earphone with clear microphone 3.Easy to carry 4.Retractile and covinient ... in China, we mainly run on DC Cable,USB Cable,headphone cable and various cable winder.Electrical conversion cnnector/cable used ... ,such asmobile phone ,MP3.MP4 ,Charger,adapter.This retactable earphone with microphone for computer or laptod is easy to carry and ...