headset combined with a microphone.

1. A headset is a headphone combined with a microphone. Headsets provide the equivalent functionality of a telephone handset with hands-free operation.
2. They have many uses including in call centers and other telephone-intensive jobs and for personal use at the computer to facilitate comfortable simultaneous conversation and typing.
3. Headsets can come in single-earpiece and double-earpiece designs. Single-earpiece headsets are known as monaural headsets.
4. The microphone arm of headsets may carry an external microphone or be of the voicetube type. External microphone designs have the microphone housed in the front end of the microphone arm.
5. Noise-canceling microphone headsets use a bi-directional microphone as elements. A bi-directional microphone's receptive field has two angles only.
6. Standard headsets with a headband worn over the head are known as over-the-head headsets. Headsets with headband going over the back of the user's neck are known as backwear-headsets or behind-the-neck headsets
7. Telephone headsets connect to a fixed-line telephone system. A telephone headset functions by replacing the handset of a telephone. All telephone headsets come in a standard 4P4C commonly called an RJ-9 connector.
8. Most telephone headsets have a Quick Disconnect (QD) cable, allowing for fast and easy disconnection of the headset from the telephone. This allows the user to disconnect from the telephone, without having to physically remove the headset.
9. Computer headsets generally come in two connecting types, standard 3.5 mm & USB connection. General 3.5 mm computer headset comes with two 3.5 mm connectors,
10. Wireless headsets are quickly becoming a new trend for both business and consumer communications. There are a number of solutions for wireless, and they usually differ according to application and power-management.