Core material: Bare copper wire

Wire material: oxygen free copper

Adopting an improved 2.5MM bayonet free headphone plug, it can be used for AKG Y40 Y50 Y45 innovative LIVE2 JBL S700 Dr. QC25 OE2 QC35 multiple headphone models.

Wire diameter 3.0 TPE spring wire, length: unstretched about 1.3 meters, stretched about 2 meters.

Normal version: No remote control, no microphone.

Wired version: Equipped with a microphone, compatible with most Android and Apple phones, capable of answering/hanging up/playing the previous/next track/adjusting the volume.