Bluetooth V4.0 for business headset for cell phone.
USB for use as softphone headset.
Docking station for desktop.
Up to 33 ft in wireless range.
Noise reduction, echo cancellation and noise-canceling mic.
Full-duplex, simultaneous conferencing.
Up to 21 hours talk time and 500 hours stand-by time.
USB charge port included for cell phone charging.
