Function: For Mobile Phone,Sport,Common Headphone,HiFi HeadphoneCommunication: WirelessStyle: In-EarFrequency Response Range: 20-20000HzResistance: 21ΩVocalism Principle: Balanced ArmatureSensitivity: 90dBModel Number: 789sdWith Microphone: YesWireless Type: BluetoothBluetooth Version: 4.1Frequency: 2.4GHzBattery Capacity: Approx. 60mAhCharging Time: 1.5 hoursCertification: CE, FCC, RoHSStand-by Time: one for 80 hoursWork Time: 2-3 hours
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