It Also includes a day operate, which can be handy at three o'clock. Its sapphire screen cannot be scratched, keeping the watch Safe and sound from everyday wear and tear. The Ballon Bleu by using a tourbillon bears the reference selection W6920105 and it is the collection's watchmaking masterpiece. Cartier https://www.watchesworld.com/our-watch-picks-for-a-stylish-spring/