Portable Color LED Visual Bluetooth Speaker w/ 3.5mm input & MicrosSD Slot Portable speaker system, Bluetooth v4.0, Easy to pair Up to 30-ft range, Visual equalizer and multiple light display modes Built-in high quality stereo speaker (5W + 5W) Built-in microphone for hands-free phone calls Built-in Li-ion battery (3.7V 4800 mAh), Up to 8 hours battery life