WAAV Rocker Mini Bluetooth Speaker for iOS (Black), iPhone, iPod, iPad and Android devices (works with any bluetooth audio source) Big sound for such a small speaker, with a bluetooth range up to 30 feet 3 hours of playing, charge in less than 2 hours with included Micro USB charging cord One-button functionality (Power, Bluetooth, Play, and Pause) Sturdy ruggedized outside texture, great for outdoor and indoor use Attached loop is perfect for a key chain or mini carabiner