Lennon Specs is a type of sunglasses with perfectly round lenses, preferably black or red. They are, not surprisingly, named after John Lennon. They are mostly commonly worn by beatniks, hippies and - since they are uncommon and noticeable - unconventional but notable characters. Thanks to John Lone in The Last Emperor, they're known as 'Pu Yi' glasses in Chinese-speaking countries . Examples of Lennon Specs include: