接口:3.5mm单4P转双3P

长度:约20CM

适用于：大部分国产单孔3.5MM接口的笔记本及平板电脑耳麦转接线，外放线。
Interface: 3.5mm single 4P to double 3P

Length: about 20CM

Applicable to: most of the domestic single-hole 3.5MM interface notebook and tablet computer headset adapter cable, outside the line.