American crocodile leather watch strap, 18k gold-filled, 33mm, exclusive first release! Real gold-filled 18k Kajia Blue Balloon American alligator leather strap! Each one has a GTA certificate issued by a national agency. The parameters are specific and detailed. The test number of each certificate is a unique number, corresponding one to one, and there is no duplication. You can check it on the official website of the agency! ,