By ship, I think they can only send the goods, but I'm not sure if all the money is in the pocket. Customs taxes are very high there.
The microwave can be taken by boat as a companion if you keep Cuban citizenship, otherwise you can send it anyway but the customs tax in Cuba is paid in cuc
I did not know if you can take it with me, I do not know if you can take a microwave. You can call. Happy day
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