The Shure RMCE-UNI cable is a 3.5mm cable along with a microphone and controls that works with Shure Sound Isolating™ Earphones. You can use it with both Apple & Android devices with a 3.5mm jack output. A switch located on back of the control pod lets you control device-specific functions. The in-built microphone and remote provide a lot of clarity for calls and voice commands. It also lets you control the volume and playback. The Shure RMCE-UNI cable measures 50 inches i.e 127 cm long.