AVTronics has designed the AVT-EC1 ear-worn mic to give you a great response at a price that will not break your budget! You will love how easy it is to adjust the AVT-EC1 for a perfect fit. A nearly invisible mic with a lightweight and comfortable design. An omnidirectional element and frequency response of 50Hz-18KHz. The ear-worn mic can replace your existing lapel for speakers who prefer a headset. Available in neutral beige black or cocoa for AVTronics PendoMax AKG Kingdom Audio-Technica Kingdom SYSV5 Samson Shure Nady (3.5mm jack) Electrovoice VocoPro and Sennheiser. If you have been looking to get a quality headset at a great price this is the headset for you.