The vintage radio headset with a standard 1/4 inch audio plug is a classic piece of equipment designed for over-the-ear use. It features a comfortable headband form factor and double earpieces in a sleek black color. This unit does not come with a built-in microphone, making it ideal for listening to audio without the need for communication capabilities. Perfect for retro audio enthusiasts or those looking for a traditional sound experience. These high-impedence headsets were commonly manufactured throughout the early to mid 20th century by Murdock, Trimm and Brush. They were widely used by ham radio operators, military personnel, aviation pilots and early telephone operators. See pics for light oxidation on the metal due to age.