1. It adopts all-copper conductor, shielded wire, gold-plated interface and good contact performance. 2. The outer casing is made of aluminum alloy, stereo extension cable, and does not support microphone function. 3. Sound quality non-destructive transfer, no need to worry about the loss of using the patch cord sound. 4. Mainly used for 3.5mm earphone interface extension protection interface of various mobile phones, MP3, MP4, tablet, video player. 5. Wire outer diameter: 5.8mm 6. Material: double shielded pure copper conductor + aluminum alloy shell plug.
