Iphone earphone for helmet
1. double SPK fixed inside your helmet, have no pressure to your ear, suit for long time using.
2. Finger PTT convinence to use.
3.Stereo sound.
4.It can be used to answer/reject telephone.
5.Choose your favor song by press PTT two times.
SPK:
Size:36mm
Sound presure level:90dB±3dB
Impendance:32Ω
Audio output:200mW
Microphone:
