Model: USB Non-Expandable
Conference Phone, LCD display,
No expansion microphone
Can integrate with USB
Patented 1st Generation Algorithm World Class Sound Quality and Sound Effects
Size: 38*38*7.8cm
Suitable for: 20-60m2 conference room, about 7-10 participants 

Portable, ease of operation, plug and play, no need of extra driver, 

Support MS XP/Vista/WIN 7/ WIN 8,etc, operating system.

A combination of video conference and audio conference, realize three party conference.

Echo canceller, 

High audio quality speaker,

Microphone with high automatic gain control function, 

Enable conference participants to talk free.

Expansion microphone for option to expand the microphone pickup range.