Redmi Note 3 Pro "special edition" or "international version"?

Hello to all, right now on GB there are an offer for a Redmi Note 3 pro "international edition".
Now i have a doubt... Is this the same as "special edition"? Because it has band 20 (800mhz) but is reported to have android 5.1 (special edition have marshmallow).
So what phone is this?

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