since the blender is rated at 600watts you need a 110-220 converter that has a higher wattage than than

here is a recommendation http://www.amazon.com/Goldsource-STU-750-Voltage-Transformer-Converter/dp/B0022TL1BE/ref=sr_1_17?s=electronics&ie=UTF8&qid=1398603276&sr=1-17&keywords=110-220+voltage+converter