Feature:
1) USB connectors with 2 sound channels to achieve the solution of virtual 7.1 sound
channel and provide virtual but real 3D surrounded sound of 7.1 channel
2) Connected by USB connector, no need to connect power and do not worry
about different security stipulation in different area
3) Directly insert into PC(do not need any driving software if above Win98), good
compatibility
4) Digital sound transmission to meet the sound requirement of new generation's
multi-media
5) SNR exceed +100db, extreme low noise, ensure to obtain the sound transmission
with high quality
6) Equipped with adjustable Equalizer to remedy the traditional speaker's shortcoming
7) Softer cable, both inside and outside are all shielded to resist the electromagnetic
interferer and improve the transmission speed
8) Support the sound result of increasing 20 dbs to increase the output sound from
speaker
9) Support the sound result of increasing 20dB to increase the input sound from
microphone

Speaker specifications:
1) Diameter: 40mm
2) Sensitivity: 110±3dB
3) Resistance: 32Ω±10%
4) Frequence response: 20-20000Hz

Microphone specifications:
1) Type: 6 x 5mm
2) Sensitivity: -52±2dB
3) Wire length: 2300±50mm
4) Connecter: standard USB connector