Only one year international warranty. And you need to get the shop to give you the international warranty card in exchange for the local HK one. And the shop need to stamp it. You also need to have the official sales receipt and the shop name on the receipt must match the shop name on the warranty card stamp. If the shop does not have international warranty cards, you need to go to Tamron HK to get it, then go back to the shop to get it stamped.