KOSS Headset SB45 USB On-Ear 

• Single, USB plug for quick headset connection
• Communication headset
• Noise-reduction Clear Voice Technology (CVT)
• Premium sound at all volume levels
• Experience absolute comfort with soft, leatherette ear cushions
• Collapsible for compact storage

Koss SB45 USB Full Size Communication Headsets deliver the full range Sound of Koss allowing you to hear and speak clearly. The Koss Clear Voice Technology, or CVT, allows the SB45 USB noise-reduction microphone to eliminate excessive background noise. This enables the PC voice applications, such as speech recognition, to be used much more easily.

The SB45 USB effortlessly collapses into a compact form for easy storage or on-the-go transportation.

Specification
Frequency range: 18-20 000 Hz
Cable: 2.4 m cable
Contact: USB