Industry durable built for commerical call center or business office use. This direct connect headset is the most cost-effective headset solution designed to increase your productivity. This headset will not require any additional adaptor nor additional amplifier. They plug directly into the headset port at the back of your telephone. Built-in remote mute button control and quick disconnect cable completed with a 10-feet coiled cord and the RJ12 handset modular plug. You just simply plug this modular plug into the headset port on your phone and it's ready to be used.