•NOTE:Specifications and design subject to possible modifications without notice due to improvements 
•WARNING:Adjust headphones sound to the proper volume.Lound sound may damage your ears.For traffic safety,never use the headset while riding a bicyle,motor bike,or while driving a car,it is dangerous to increase the sound volume too much because you cannot hear extemal sound;take great care about traffic around you. 
•CAUTION:Top speed will not longer guarantee the performance or warranty if the user attempts to inspect or modify this product in anyway. 
•HI-FI:Audio in operation internet phone Talk IP telephone.For all Multimedia purpose. 
•Technical Parameters: 
•Mic Type:•9mm × 7mm 
•Impedance:Maximum 2.2KΩ 
•Sensitivity:-58db ± 2db(0db=1v/pa) 
•Directivity:Omnidirectiomal 
•S/N Ratio:More than 60dB 
•Sensitivity Redultion:Within-3dB at 1.5V 
•Mic Frequency Range:30Hz-16,000Hz 
•Speaker:•40mm 
•Sensitivity:108dB S.P.L at 1kHz 
•Spk Frequency Response:20Hz-20,000Hz 
•Impedance:32Ω 
•Rated Power:100mw 
•Power Capability:1000mw 
•Cord Length:about 2.5m 
•Plug Type:•3.5mm