JBL T50HI in-ear headphones. They?re lightweight, comfortable and compact. Under the durable earpiece housing, a pair of 9mm drivers punch out some serious bass, reproducing the JBL Pure Bass sound you?ve experienced in concert halls, arenas and recording studios around the world. In addition, the single-button remote on a tangle-free flat cable lets you control music playback, as well as answer calls on the fly with a built-in microphone. Making the JBL T50HI your everyday companion for work, at home and on the road.