USB IP headset, USB IP headphone and USB IP microphone
Free talking for Skype, MSN and yahoo, etc.

Digital Sound USB headphone for company, Volume control, MIC/speaker mute functions combination:

Key features:
Easy USB connectiom
High quality ear cushion provides extra
Volume control built in
Microphone/speaker mute functions combination
Key Specification:
Speaker: 40mm dynamic type
Impedance: 32ohms
Sensitivity: 405dB+/-4dB
Max. Input power: 100mW
Cord length: Around 2.0 meter
Connector: USB2.0