Main FeaturesAluminium MaterialIn-ear SpeakerMicro USB SolutionProduct SpecificationsBluetooth Specification: V2.1+ EDRBluetooth Profiles Supported: Headset, HandsfreeOperation Range: Up to 10 metersTalk Time*: Up to 3 hoursStandby Time*: Up to 100 hoursDimensions(mm): L53.5 x W15 x H6.5Weight: About 6.5g* May vary due to users operation mode and device settings.