AEC BQ618 Smart Wireless Bluetooth Stereo Handsfree Earphone with Microphone Support 3.5mm for Phone / Tablet / PSPs(white)

Line Length:NoneWith Microphone:YesWireless Type:bluetoothBrand Name:AECConnectors:NoneWaterproof:NoActive Noise-Cancellation:YesSupport Memory Card:NoVolume Control:YesFrequency Response Range:20-20000HzResistance:25?Vocalism Principle:Hybrid technologyModel Number:BQ-618Sensitivity:110±5dBStyle:HeadbandSupport APP:NoControl Button:YesBluetooth Version:V4.1 + EDRSupported profiles:HFP A2DP AVRCPSupport Apt-x:NoProduct parameters:Speaker specifications: 30mmOutput power: 32 ohms 45mWFrequency response: 200Hz-2000HzSensitivity: 120db±3dbSignal to noise ratio: ?90DBDistortion: 0.5%Bluetooth standard: Bluetooth 4.1+EDRSupporting protocols: HFP A2DP AVRCPSupport 3.5mm audio inputPower supply mode: built-in lithium battery 190mAhCharging time: 3 hours (please extend the charging time for the first charge)Effective distance: 10 metersWorking time: more than 10 hoursStandby time: 250 hoursCharging interface: Micro USBBuilt-in microphone to support digital signal processing echo cance