Super Portable: SoundCore Nano is incredibly compact and has a battery that supplies up to 4 hours of continuous play. Stick it in a pocket or purse or clip it to your backpack to party wherever, whenever. Small Body, Big Sound: SoundCore Nano is incredibly tiny but blasts out unbelievable sound using a 3W audio driver. Add Some Color: Select from Gold, Grey, Pink or Silver - and get the ideal match for your devices. Aluminium alloy finish ensures your sound is both beautiful and resilient. Bluetooth 4.0 Technology: SoundCore Nano uses some of the most advanced Bluetooth technology to connect quickly and easily to any device. Its 33ft connection range and built-in noise-cancelling microphone give you crystal-clear, hands-free calling even at a distance.