Compatible with II, Bluetooth headset, monitor, MID Bluetooth headset, etc.Made of 5N OFC(oxygen-free copper) core, which can improve the resolution of the earphone, make the sound field wider and surround .High-elastic extension cord, long-term use without deformation, resistance to friction.Soft and Skin-friendly.Outer diameter of about 3.0mm. Cable length up to 1.2m - 2.5m. Golden plated 3.5mm plug the low loss of transmission and the stability of the connection.PLUG AND PLAY - With three buttons,easy to control what you want to play,pause and adjust the volume.colour:Black+goldMaterial:Plastic + MetalPackage Contents:1 x 3.5mm Extension CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.