... Support multi-point connection, can connect two Bluetooth devices at the same time.- Build-in rechargeable li-battery, can ... got FCC, CE, RoHs, BQB approved and sold well worldwide, especially in USA, AU and European countries.With ... your R&D base, and your factory as well.FAQ:Q: How do I request for a ... ?A: Yes, OEM are welcome.Q: How long does the battery last on the bluetooth headphone once it's ...