The BBC has revealed the final design of the Micro Bit, a pocket-sized computer set to be given to about one million UK-based children in October.

The device – which features a programmable array of red LED lights – includes two buttons and a built-in motion sensor that were not included in a prototype shown off in March.

Technology correspondent Rory Cellan-Jones spoke to Joe, Lauren and Ross – three young ambassadors for the Micro Bit.

They showed Rory their light-up name badges they had programmed into the Micro Bit.