What item can't you live without that no one else seems to know about?
It appears that the Belkin mini 3-outlet travel swivel surge protector only handles 120v and not European 220v. It would likely fry when plugged into a foreign outlet.
Instead, try the Simran SM-60 110V-250V Universal 3 Outlet Power Strip/Surge Protector for Worldwide Travel with Overload Protection, found on Amazon at:
With the Simran product, all you need is an adapter to plug it into the foreign outlet configuration. Then, plug your dual voltage items into the plug strip for charging and/or operation.
I have used the Simran product successfully on several trips to Europe, both in hotels and on river cruises. It works great and is small and compact.