The SW925 Digital Audio Travel Partner Plus is our most complete, all-in-one PA system. The 250-watt portable address system will clearly and powerfully project your voice or music over an audience of up to 7,500 people in a room size of up to 25,000 square feet. Built-in media player allows you to play your own recorded music using your SD card or thumb drive. Also, stream audio wirelessly from your smart phone, tablet or any other Bluetooth® enabled device. Features specially tooled and molded plastic enclosure for exceptional durability. Includes wired handheld microphone with 25 ft cord. Weighing only 35 lbs., it travels and sets up easily with retractable luggage handle and wheels. The system is powered either with AC power or with its built-in rechargeable battery that lasts about 6-10 hours (depends on volume) on a single charge. Future ready with four expansion banks add the peace of mind of being able to keep up with the advancement of new technologies.