It was released on August 2, 2006, and was their first single to be released as a CD single and CD+DVD single. "Splash Gold -Natsu no Kiseki-" is a mid-tempo pop song with Okinawan folk influences.
It debuted on August 2, 2006, as their first single to be released in both CD and CD+DVD versions. The song "Splash Gold -Natsu no Kiseki-" is a mid-tempo pop track with elements of traditional Okinawan music.