Speaker dia: 10.0mm  
Impedance: 32ohm±15% 1000Hz/Mw
Sensitivity: 102dB±3dB (At 1000Hz 1MW)
Mylar : 6µ
Frequency Response: 20Hz-20kHz
Level difference of L-R: ≤3dB at 500Hz-1000Hz
Distortion : Less than 5% at 1KHz 2mw
Rated Power: 3mw
Maximum Power: 5mw
Cord Length: 1200±100mm
Plug Type: Straight 3.5mm Golden Plated
Weight: 18±3g (with Cord)
Mic dimension:4.5*2.2mm
With On-Off
Advantages :

1.fashional/new design,stereo for mp3,mp4 player,PC, laptops  other multimedia players .
2.advantaged  price and high quality.
3.beautiful package for your retail.
4.In-ear design making noise cancelling.
5.Never hurt ears and listening.
6.Many colors can be choosen.
7.Cheap & nice quality.
8. Best ,timely service