... PlayingTimeUp to 4 hoursPowerImput AC 100-240V, output DC 5.3VRF Output Power-6dBm to 4dBmOperating temperature-10’C ... about sweat ruining your headset* Classic wireless bluetooth headset* Powered by long lasting, rechargeable batteries* Impressive range outstanding comfort, allowing ... :You can be assured that our products are accredited by FCC, RoHS and CE certification. OEM and ODM ...