sic state 10 H/ Talkingstate 15HSNR:S/N≥95Charging Time:2hBluetooth VersionV4.0?CSR8635Speaker:16Ω20mW x 2Battery:3.7V/195MAH (Polymer rechargeable battery)ANC frequency100-1000HZANC level15-20dBStandby time≥500Hworking environment10~60℃Support ProfileHFP, HSP, ? ZVRCP, A2DPMain FunctionAnswer phone calls, Redial, Volume Control, MusicPacking ListHeadset, USB Charger, ManualPlace Of OriginChinaIP gradeIP 55