Key Specifications/Special Features:

12 classical 4-polyphonic ring tones
Red power LED and green status LED
Adjustable volume for earpiece and ringer
Supplied hands-free earphone
USB interface Plug and play, no external power/sound card needed
Acoustically isolated earpiece and microphone to eliminate echo
Mic mute button for privacy protection
Full-duplex communication with crystal clear sound
Compatible with other PC-based soft phone applications, such as QQ, MSN, yahoo message, QQ, Xten, Dialpad, media ring
Dimensions: 48 x 120 x 24mm
Weight: 85g
Operating humidity: 5 - 95%
Operating temperature: 0 to 40deg. C
Earphone connector: 2.5mm
Voltage: 4 - 25V
USB port: Mini USB A-type