Earbay Call Center Noise Cancelling Headphone Monaural Telephone Headset with RJ Connector Desk Phone Headphones PC Headset Professional Monaural design for high-traffic call centers, computer, game player. Call center headsets with high quality noise cancelling technology provides you crystal clear sound even in noisy environment. Monaural telephone headset comfortable, lightweight design, reversible for use with either ear. With soft earplug. Direct connect over the head headset, no additional amplifiers or adapters required. With the USB jack. Noise cancelling Microphone with adjustable 270 degree plug rotation, providing clear communication.