Features: Replacement audio cable cord wire is for Beyerdynamic MMX300 headphone cable. The extension cable length is around 130cm/51.18in. Cable only, headset is not included. Tight connection ensure the sound quality transmission without interruption and disturbance. The wire control function can control the volume of the sound, the microphone switch function. The side button function can be connected to the mobilephone, it can pause/for play the player, and switch songs. 30 Specifications: Material: Purity Oxygen-free Copper Length:Approx.130cm/51.18in Color:Black Interface:3.5mm Plug for Beyerdynamic MMX300 Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Headphone Cable