Gold metal keychain with the HYDRO logo. I received a few of these from acquaintances, but I'm not sure what they are. They seem to be quite old, so they might be rare. I couldn't find them on Google, so I'm not sure if the price is appropriate. - Brand: HYDRO - Color: Gold - Material: Metal - Design: With logo - Accessories: Outer box There may be scratches and dirt as they are old items, but they are, in principle, unused. There is some peeling on the inside, which appears to be discoloration. I believe this is due to aging. Thank you for looking.