The Wide arms and hour markers in simple designs – triangles, circles, rectangles – are full of a luminescent content emitting a long-lasting glow. The Ballon Bleu with a tourbillon bears the reference quantity W6920105 and is the collection's watchmaking masterpiece. Cartier crafts its 39-mm case outside of 18-karat white https://www.watchesworld.com/our-watch-picks-for-a-stylish-spring/