Now the market there have been many imitations N9 microphone with poor quality when using some poor sound knowledge , detection of non-compliance data over voice callback unstable
Pro purchase must pay attention to see the brand N9 models ; host using two jun sound knowledge of metal microphone, ultra-clear sound reception
Four kinds of GSM frequencies used worldwide , the host intelligent recognition dialing bound back
Use the recommended one : You can listen and call phones with call recording function on sound knowledge retention sound ( have this feature phones can be used )
Use the recommended 2 : Sound knowledge available within the GSM card number and your phone number dialed opening 5 yuan monthly savings cornet calls ( recommended moving yards ( 200 times the actual test without a turnovers )
According to a recent issue of the pro -mentioned clearly marked to give the following
1 sound range , products and in the same position , one can hear the normal sound transmission device in there . ( But not into the audio port closed ) , put the package is not ideal.
(2) How far can put the pickup , the world as long as the product where it can receive the signal can be used , this product is a quad-band signal reception .
3 quality good purposes of this subsection , imported chips
4 . Use will not have any sound , light , vibration , ring
4 pickup with a special section , you can not locate ( To locate function buy other models )
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