KZ ZN1 Smart Earphone Stereo Headphone Bass Headset Noise Cancelling For Mobile Phone<br>Features: Double modular structures (8MM + 6.8MM dual-pressure independent drive unit)Professional amp chipLeading audio processing chip， can be freely set the treble and bass state headphones through the wire， called the separate headphone effectThe whole segment rely on hardware decoding settings， gain \/ minus frequency sound without any breakIntelligent IC switch， compatible with all the national standard and American standard phone interface， HD callsSupports all international standard interface phone to adjust the volume wireSet Status LED DisplayThe user can choose to start or shut down the amplifierIntelligent alerts when users set the volume exceeds the maximum， the headset will alert and inform the user sound too loud may damage your hearingWhen users use a headset in a row more than 90 minutes， the headset will alert and inform the user needs proper rest to avoid ear fatigueAuto dormancy， when the user uses headphones in a row over two hours not to carry out any operation if the headset， the headset will automatically pause playback into hibernation<br>Specification: <br>          Brand       KZ           Model       ZN1           Use       Mobile Phone           Style       In-Ear           Drive unit       Double driver unit (6 mm + 8 mm)           Plug type       3.5 MM (plating)           Wire length       98 cm(38.4 inch)           Output power       10 mw * 4           Frequency range       60-15 KHZ           Sensitivity       98 dB &amp;plusmn;2 dB           Soundtrack       2.0 four channels           Impedance       16&amp;Omega;           Volume(Adjustable range)       - 79 --- 0 dB           Bass(Adjustable range)       - 14 -----+ 14 dB           Treble(Adjustable range)       - 14 ------+ 14 dB           Lithium battery capacity       200MHA           Operation time       10 hours (continuous use)           Quality standards       CNASL1454 \/ EU CE standard   <br>Package Included: <br>1 x KZ ZN1 Stereo Bass Headset1 x Manual<br>              <br>  Detail Pictures: