PAC-MAN Colour Handheld Arcade Video Game - Namco. 

The mirrored screen shows a section of the maze with exits to other sections.  Eat the dots in all sections of the maze to clear the level.  The maze increases in size as you progress through the levels and the ghosts become harder to avoid.  Power pills let you temporarily catch the ghosts and fruit appears to boost your score. 

Boxed with instructions.  Tested as working with clear display and sounds.  Good overall condition with minor shelfwear, minor scratches.  Requires 2x AAA batteries (not included due to Royal Mail restrictions).