This high-power active Bluetooth Speaker System will add rich 2-way full ranged sounds to any occasion. The system is portable and includes built-in rechargeable battery so it?s perfect indoors and out. The extendable carry arm and rolling wheels will allow you to quickly and easily transport the speaker wherever it?s needed. Spread your message at social gatherings or play your music at the party, either way you?ll enjoy the versatility of this Bluetooth Speaker System. Play your favorite audio files when you connect an SD Memory Card or USB Flash Drive, or just listen to the radio with full-bodied and wide-range sound.