3.5mm interface device universal Suitable for extension connection of devices with 3.5mm audio interface Suitable for YouLoop magnetic antenna loop antenna and radio connection use Colour:black Material:plastic+metal Size:Length: about 6 meters Package Contents: 1 x Audio headphone plug adapter cable Only the above package content, other products are not included. Note: Light reflection 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.