"It's this little s**t place that has got three million people - Japan has got how many? 125 million," Jones said.
"Japan under-20s players play rugby from the age of 15 and they virtually train every single day, they don't study. If you ever meet a rugby player, you'll know they're a rugby player in Japan because they're not very well educated.
"Then they go to university for four years and they don't study, they just play rugby full time. You've got these under-20s players from a country of 126 million, who are basically full time professional from the age of 15, playing against a Welsh side who are amateurs.
Warning: Video includes offensive language
"So Wales beat Japan 125-0. So I thought 'this is a great job I've got'."
Jones also referred to Ireland as "the scummy Irish" is the same speech.
Ahead of the final round of Six Nations games, where England host Ireland on Sunday, Jones issued a statement of apology, saying: "I apologise unreservedly for any offence caused - no excuses and I shouldn't have said what I did. I'm very sorry."