This Unit Will need a new battery 12v volt will work. I only plugged this unit into 12 volts car battery and stored the unit inside a trailer. This unit has a custom speaker attached and a special switch to shut it off. Reason: So you can have the unit inside with you and run only the external speakers. I have two external speakers with about 10' cords. One of the speakers has a dent on it but works fine. Also included is One 10 foot extension Cord and One 42' extension cord for the speakers. The unit has approximately 400 sounds... See Photo Album