... 3, Metal speaker, good sound quality Mini bluetooth Speakers Features Bluetooth v2.1• Works with any phone ... any MP3 Player with a 3.5mm auxiliary audio outputspecification Model Number: A1-BBluetooth version:V2.1 ... HFP V1.5, A2DP V1.2 , AVRCP1.0,Audio input type:Bluetooth, 3.5mm AuxiliaryBattery: Built-in ... light: RedHow to use ?1, Turn on the speakers 2, Use your bluetooth device (mobile phone) to ...