Does that hourglass work, or is it just decorative?

How to say “Does that hourglass work, or is it just decorative?” in Japanese

In Japanese

その砂時計(すなどけい)、ちゃんと使(つか)えるの？それとも飾(かざ)り用(よう)？

Sono sunadokei, chanto tsukaeru no? Soretomo kazariyō?

Does that hourglass work, or is it just decorative? in other languages