Japanese phrase
正規品ですか？ sei ki hin de su ka
Meaning
Is this a genuine product?
When to use it
Checks whether a product is genuine rather than counterfeit. This polite question is common when buying something from an unfamiliar seller or shop.
Example dialogue
これは正規品ですか？ ko re wa sei ki hin de su ka
Is this a genuine product?
はい、正規品です。 ha i sei ki hin de su
Yes, it is genuine.