Spain defender Carles Puyol is refusing to get carried away with his side's hugely impressive run of form.

Spain have swept all before them in recent months and you have to go back to 2006 to find the last time they tasted defeat when Romania claimed a 1-0 friendly win in Cadiz.

"We are enjoying a fantastic moment. After winning against Italy and getting beyond the quarter-finals of the European Championship everything changed," said the Barcelona defender.

He added: "We gained confidence which we still have now, but we are not invincible.

"Some day a defeat will come, but we are going to try to make that day as far away as possible.

"We are a well-balanced team, but still we have things to learn, (such as) winning without playing well.

Spain, who have been triumphant in their last 16 consecutive matches, will look to build on their World Cup qualifying wins over Bosnia-Herzegovina, Armenia and Estonia when they take on Belgium on Wednesday.

Those three triumphs have left Vicente del Bosque's side at the top of Group Five, two points ahead of both Belgium and Turkey.

Looking ahead to the Belgium clash, Puyol said: "Next to Turkey it is one of the most difficult games. But Spain have earned the right to go into the game with confidence."