1. This is the dynamic speaker set with cable for helmet bluetooth wireless headphone.
2. The speaker is with foam, EVA or fabric protection.
3. The cable soldering point on the speaker unit is much strong, there is metal clip on the cable and black glue protection the soldering wire from breaking.
4. There is connecting port, connects to helment bluetooth wireless setting.
5. We are a manufacturer, we do both OEM and ODM to cusotmers of the helment wireless dynamis speaker settings.