REMAXModel Number:RB-S19Style: NeckbandCommunication: WirelessConnectors:USBUse: Mobile Phone, ComputerFunction: Microphone, Noise CancellingCord Length:45cmVersion:V4.2Operating distance: Up to 10m (free space)Talk/Music time: Up to 4 hrsStandby time:160 hrsFeatures: MagneticWeight:19gType:INEARCharging time: 2hrs