Metal speaker with controls for adjusting volume, play/pause, skipping songs,accepting/rejecting/redialing phone calls, a built-in microphone and LED status indicator. Compatible with audio devices that have a 3.5 mm audio jack and wireless technology. Includes a USB/mini-USB charging cable and an audio cable with a 3.5 mm plug. spectech-sound products have a one year limited warranty on electronic parts from date of purchase