A question about product $\sigma$-algebra

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Assume $(X,\mathscr{G})$ is a measurable space where $X$ is a finite set and $\mathscr{G}$ is just the power set. Let $\Omega$ be the infinite product of $X$ and $\mathscr{F}$ be the usual product $\sigma$-algebra. Is $\mathscr{F}$ just the power set of $\Omega$? What if $X$ is countable instead of finite.

Thanks.