... wireless speaker design, beautiful and practical. portable bluetooth mini speaker for MP3 mobile phone and laptop ... Product Name Card Reader Bluetooth stereo headphonesProduct ModelK130VersionBluetooth V2.1+EDR Frequency ... indicatorApplicable matching productsMeet HFP, HSP, AD2P, AVRCP Bluetooth protocol computer, USB Bluetooth adapter, cell phone, IPAD, MID, etc.Battery3. ...