Firstsing FS25062 Phone Headset for NDSi

Use for NDSI console.
Traits:
* Double stero spearker;sound and alt-bass clesrly.
* sound function with clearly
Electric property trait:
speaker
* 108 3dB at 1,000Hz/1.28V
* Resonance frequency Fo 250HZ±20%
* Frequency response 20-20KHz
* Degree of distor