Professional Headset - All Day Wearing Comfort, Highest-Grade Headsets for Call Center, Telemarketing, Customer Representative. Two Year Warranty, 20 Year Proven Quality in The World. A Digital Headset Amplifier and A Wired Phone Headset Package - Compatible with Cisco, Avaya, Polycom and Most Desk Phones. Digital Volume Control for Mic and Speaker with a Supervision port for monitoring and connecting recorder. Effortless Comfort for Extended Use - Stay comfortable during long work hours with our telephone headsets ergonomic design. The lightweight headset features an adjustable headband and soft ear cushions, providing a secure and cozy fit, allowing you to focus on your tasks without discomfort. Quick Disconnect Headset (Cord length 3ft, No Volume Control) + Headset Adapter (Stretched lenght is over 9 ft). Quick Disconnect is an Essential feature for Professional headset for Business. It allows you to walk away without remove the headset from your head. Volume Control Digital Amplifier with Noise Cancelling Mic with Static shock protection reduces background Noise. Super sound feature Binaural Headset delivers richer and crispy communication. Swiveling receiver with the large ear cushion supports excellent sound delivery. The Digital Headset Amplifier wired headset for desk phone is compatible with Cisco, Avaya, Polycom and Most Desk Phones. Digital Volume Control for Mic and Speaker with a Supervision port for monitoring and connecting recorder is a choice for a call center phone headset . Universal Phone compatibility switch makes most telephones compatible as a telephone headset. Mute switch for temporary call suspension. USB Powered (No Batteries need). Elegant design with Noise cancelling Mic boom arm and superior sound quality and Extreme durability. The wideband frequency response receiver specially for IP telephony with swiveling speaker covers the ear softly and is comfortable enough to wear all day. Acoustic shock protection receiver. Mic static shock protection. Noise cancelling office headset mic reduces background noise.