Your job may require you to use headset especially if you are a call centre workers. You have to talk and take notes at the same time, almost instantaneously. A telephone headset role is to replace the telephone handset. Telephone headsets will be connected to office phone (fixed-line telephone) with a connector.

Some employees may request a mono headset. Mono headset is also called monaural headphones. Mono headset has single earpiece, to emit voice from a single source, be it left or right. Mono headset is suitable for people who needs to listen to telephone conversation, and at the same time has to talk to others in the office. Means they are open to distraction. It depends a lot on the work environment.

Choose wisely.