This headphone offers all-day comfort and superior sound quality in a compact unit. With its comfortable, lightweight over-the-ear single earpiece design with Quick Disconnect feature, this headphone really pulls its weight. The microphone boom is able to rotate to accomodate either the left or the right ear. The noise-canceling microphone reduces surrounding background noise while giving you crystal clear phone calls. The headphone is a lightweight, comfortable design with a comfortable ear cushion that swivels at a touch and rests lightly on the ear and makes wearing this headphone for long periods of time, a pleasure. Comes complete with a tangle-free coiled cord and shirt clip. This cord has the Quick Disconnect option which lets you walk away from the phone while still wearing the headset. Uses a standard phone RJ-11 modular plug. Covered under a 1-year mfg. warranty.