Cost-effective call center headset; omnidirectional microphone; Hearing protection technology, care of the user's hearing; using the Flexible gooseneck metal tube, mic accurate positioning; smart design, Suitable for all-day wear; direct rj9 or 2xdc3.5 plug, easy to use . Receiver type: dynamic; microphone type: ecm; connection type: 3.5mm/pc/rj9 straight; boom type: gooseneck (serpentine); wearing styles: Headband can be adjusted for left or right-ear wear; comfort: leather / Sponge earmuffs, ear angle flexible automatic adjustment;