Introducing the Sony SRSX11, the ultra portable Bluetooth speaker that really packs a punch. This cube-shaped speaker goes against any presumptions you have about small speakers. The dual passive radiators and 10 Watts of digital amplification pump out some seriously big, clear sound. Connecting instantly via Bluetooth, you can easily switch to call mode with a press of a button. The lithium ion battery gives an incredible 12 hours of music on a single charge provided by the micro USB cable. Weighing just 7.7 ounces and complete with a soft lanyard, the Sony SRSX11 is super lightweight and portable; ideal to be taken anywhere you go and can even be packed in your bag. Available in four colors, the Sony SRSX11 offers unmatched size and music quality.