Calla Solitaire Collection_Sport Connect Crystal: Sapphire crystal with double

Crystal: Sapphire crystal with double antireflective coating on top and bottom sides of crystal

The blue sunray brushed dial with red and yellow highlights

Weight (g): 114

Willy Breitling developed a wrist-worn chronograph with a circular slide rule that would allow pilots to perform all necessary flight calculations

Decoration: Côtes de Genève

Calla Solitaire Collection_Sport Connect Crystal: Sapphire crystal with doubleHow weightless the diamond seems to float between two golden flower chalices that gently embrace it. Highly polished mirrored surfaces allow for particularly intense light reflection, making the stone sparkle magically.