All G-Shock models, regardless of the manufacture/assembly region, are original – if you buy them from an official dealer in your country/region, you have an original Casio warranty certificate. But, historically, watches with the “Made in Japan” label are more valuable. First, that is the original manufacturer’s country, and second, some limited editions and unique items are sold only in Japan. In our listing of all G-SHOCK watches, you will find links to the Amazon store with the official products only. You should not be confused by labels like “Made in China, Thailand…”. That is not a sign of a fake.