Moto G4 XT1622 and G4 Plus XT1642... Single or DualSIM

Hello to all,

I have some trouble understanding if a version of Moto Moto G4 and G4 Plus is equipped with singleSIM or a dual SIM card.
In any store I went, change the technical specifications! O_O
I'm pretty confused!

The model Moto G4 XT1622 is Single or DualSIM?
The model Moto G4 Plus XT1642 is Single or DualSIM?

Thank you very much!

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