US President Donald Trump tossed his translation earpiece to the ground during comments to the media with Argentina's president Mauricio Macri on Friday, saying he could understand the South American leader better without it.

As the Argentinian president greeted him in Spanish, Trump took his his translation earpiece off telling Macri 'I think I understood you better in your language than through the translator'.

Just moments earlier Trump looked annoyed with the translation as he kept pressing the machine into his ear. The US President thanked Macri for the warm welcome, adding that the two 'have been friends for a long time'.

G20 world leaders are gathered in Buenos Aires for the 2018 summit, which aims towards reaching agreement on key global issues.