Poweradd&trade; Wireless Portable Bluetooth 4.0 Speaker with NFC Function Built-in Microphone and Hands Free Speakerphone Compatible with most Bluetooth Enable Devices Rechargeable Lithium-ion battery,provide more than four hundred hours stand-by time and over 5 hours working time,pairs easily with your smartphone ,iPad and other Bluetooth devices Bluetooth 4.0 technology&NFC function, wireless Bluetooth with NFC function provide a range of 10 meters operating distance more freedom and flexibility along with your favorite Microphone and speakerphone,equipped with built-in microphone and speakerphone seamlessly answer incoming calls with the hands free Small size with stronger energy,portable and lightweight design enjoy the convenience of share music,movies,games,conference calls any where Package contents:Poweradd&trade; wireless Bluetooth speaker;Micro USB cable;Audio cable;User manual