ACUPWR (TM) ADP-100 From 110 to 220 volt 100 Watt Step Down Transformer - Lifetime Warranty Lifetime warranty Designed and Manufactured in USA from the highest grade copper in the world. Safe for continuous use at 120% of the stated wattage! Accepts 200% power for short time usage. Auto shuts down on overload. Comes back on after a few minutes..