Hernandez leaves Valencia for Swansea
The 27-year old winger has departed his homeland of Spain to sign a three-year deal with the Swans for a fee of £5.55million.
"I'm very happy to become a Swansea City player," he told the club's official website.
"It was my target as soon as I knew there was interest. There were offers from other clubs, but this was the only club I wanted to join."