This USB telephone headset delivers exceptional sound quality and noise cancelling microphone picks up your voice loud and clear. With wideband audio speaker frequency range 50HZ-10KHZ, this corded computer headset is with rich sound and voice, giving users the feeling they are having a "face to face" conversation. What's more, the top USB chip of DSP technology makes perfect voice transmission, ideal choice for office and call center conference calls, online learning etc. | HIGH DURABILITY: Made of high quality materials and exquisite workmanship, this durable PC headphone withstands the constant demands of all-day use in busy environments. And the reinforced cord is built to protect call center headset against office chair wheels, sharp objects on daily use. The PC headset can fully adapt to 7x24 hours for high frequency. | Speech Recognition & Volume Control: This professional computer headset is designed with voice recognition microphone for speech dictation and language learning, this PC Headset allows you easily control your computer or type documents. What's more, the in-line volume control will make you more productivity, you can easily control the volume on headset directly. | ALL DAY COMFORT: The MKJ806UC is a wired binaural headset designed for maximum comfort. with 60mm adjustable pliable steel headband to fit all head sizes, quality plastic makes office headset durable enough for lasting use, and the super large soft ear cushion provides users with the ideal communication experience. And dual ear headset will help users focus on the conversation itself and drown out surrounding environmental noise. It is specially designed for home call center, call center etc. | Enhanced Hearing Protection: Landline telephone headset with hearing protection technology will protect users against acoustic injury and sudden sound burst, any sound above 118db is filtered out, this corded phone headset is specially important for people who are on the phone all day long.