Portable Bluetooth Speaker- Ultra powerful (easily fills any room with sound!) * BIG SOUND- Outperforms other, more expensive speakers with room to spare * Built-in Lithium-Ion rechargeable battery- Up to 10 hours of play time and you never have to change a battery * USB charging cable included- charge through your computer or cell phone wall charger (NOTE: Use only cell phone charger or computer usb ports, tablet chargers will harm internal batteries) * 2 Year Warranty