Input 100 - 240v AC. Output 600ma maximum regulated DC
Output voltage can be set to any of: 3v, 4.5v, 5v, 6v, 7.5, 9v, 12v
For indoor use only
Changeable plugs fit most audio appliances including standard USB socket 5v
Please read the back of the box “shown In the pictures” to make sure this appliance will suit your needs.