... phone and laptop Product Name Card Reader Bluetooth stereo headphonesProduct ModelK130VersionBluetooth V2.1+EDR ... range<=10MFrequency Response20HZ-20KHZSignal-to-noise ratio80dbStatus IndicationRed, blue color indicatorApplicable matching productsMeet HFP, HSP, AD2P, AVRCP Bluetooth ... protocol computer, USB Bluetooth adapter, cell phone, IPAD, MID, ...