You won't need it for electronics adapters....all modern units are fully 110-240 volt capable with nothing but one of the little prong adapters to switch the plug style. No voltage step down unit needed. You can pick up the little plastic adapter couplers in the country you will be heading to (most any country) for about €1 each, or probably not even half a pound in the UK.

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'13 ML350 Bluetec - 95k - dad's (OC-98k)
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