... bass 3) Built-in rechargeable Li-ion battery 2012 New Patent model Bluetooth mini speaker with rechargeable Li-ion battery(ADP-107BT) Key ... connection to Ipod,Iphone or any bluetooth-enable devices6.Rechargeable Li-ion battery DescriptionSpecial Feature:Wireless, Portable, MiniUSEPortable Audio Player, ... 2012 New Patent model Bluetooth mini speaker with rechargeable Li-ion battery(ADP-107BT)