The Plantronics CS540 Wireless DECT Headset is a stylish and functional single earpiece with a comfortable headband design. It features wireless connectivity, volume control, noise cancellation, and a built-in microphone with a boom design for ease of use. The sleek black color and reliable DECT technology make it a great choice for hands-free communication at home or in the office. Made by Plantronics, a trusted brand in telecommunications, the CS540 headset offers convenience and quality in one versatile package.