The Jabra C510 is a stylish, lightweight, behind-the-ear headset with built-in miniature microphone boom for optimal voice pick-up. Listening quality is optimized by the high-sensitivity miniature speaker and Jabra MiniGel?, which channels sound into your ear. Every conversation becomes an enjoyable experience with the contoured earpiece that fits discreetly behind either ear for a comfortable and secure fit. Answering and ending calls is convenient too, with the answer/end button located right at your fingertips on the microphone boom (phone dependent). Also includes the handy mute switch on the boom that is great if you're on conference calls.