BT12 is a Wireless Bluetooth Classic Retro speaker with the additional functionality of an FM radio, TF Card Reader, Aux input, USB input And Mic. for hands-free calling. It is a 5W RMS retro speaker. Stylish Retro appearance. Vintage Style Look and Design. This speaker has a 10 Meter operating Range & a Rechargeable 1200mAh Battery for up to 5 hours of playback time on a full charge.