We are a headphone manufacture, have been in desigh, produce and sales headphoneFor more than 15years. To write this letter, I hope we can build businessRelations with you on mutual benefit. If you li

Speakep-frequency response:20-20000hzSensittvty:105+_3dbImpedance:32om+_5% at 1khzMax input:10mw

1) Type:9mm diameter electret condenser omnidirectional microphone2) Sensitivity:58 +/- 3dB3) Impedance: Low4) Frequency response:30Hz to 16kHz5) Standard operating voltage:3V

Sensor type: Optical(800dpi)Button:8Scroll wheel:4-way navigationMini size(mm)121.9 * 73.7 * 41.9Interface: PS/2, USB or up comboOperating system: Win 98/2000/me/XP

1. Microphone sensibility: -50(+ -)3db(2v680n)without noise joming unit of high-grade microphone.2. Earphone sensibility:105db/mwFrequency range:20-20000hz3. Insert: Diameter 3.5 stereo doublecolorSig

Impedance: 16kHz,Sensitivity: 108dB/mw,Frequency Response:8Hz-23,000Hz

We are a headphone, mouse and webcam manufacture, have been in design, produce and sales headphone for more than 15years. To write this letter, I hope we can build business relations with you on mutua

We are a headphone,earphone manufacture, have been in desigh, produce and sales headphoneFor more than 15years. I hope we can build businessRelations with you on mutual benefit. If you like, pls load

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