The SB42 features a detachable cord design with dual-choice entry, allowing the user to choose which ear-cup to connect to for optimum adaptability. Once the cord is attached, the opposite side becomes an output, allowing pass-through listening or daisy chaining for extended monitoring. Included with the SB42 is an all-new 8-foot cord with integrated boom microphone (with separate audio/voice plugs). Along with the prefect fit, The SB42 headphones delivers great volume, even with low-voltage devices. Closed ear cushions seal comfortably around your ears to block outside noise and keep music from leaking out. The SB42 computer headset easily folds flat for compact storage or transportation.