Features: 1.CompatibleBluetoothspecification:V4.1+EDR,backwardcompatiblewithV3.0,V2.1,V2.0,V1.2,V1.0. 2.Builtinhighpowerspeakerandmicrophone,makeitthebestassistantforyourphone. 3.Withvoiceprompts,voiceoperatinginstructions.Itcantellyoutopairthephone,whenyouturnon/turnoffspeakerphoneorphone,italsotellyou.etc. 4.FullDuplex&highPerformanceSpeaker.Bluetoothtransmissiondistanceofupto10meters.Phonesandspeakerphonewillbeconnectedautomaticallyafterpairing. 5.Compatibility:AlliPhone's,iPad'sandiPodTouch,Androidsmartphones-HTC,AllDroids,Samsung,Smartphones Specifications: Size:130mmx49mmx15mm RechargeablebatteryorDC5.0V,400mACarCharger Bluetoothversion:BluetoothV4.1+EDR Operatingfrequency:2.4GHz-2.48GHzSIM BluetoothV4.1,Class2,Workingrangeofupto10Meters Protocolssupported:HSPandHFP Multi-devicepairing:Pairingrecordswith8Bluetoothmobilephone Standbytime:1000hours/41days Talktime:15-20hours Chargingtime:about3hours Chargingvoltage:DC5.0V,1000mA RechargeableBattery:650mAh PackageInclude: 1xMultipointSpeaker Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.