US: S to Europe Size 19
Cross-market adult bracelet and cuff apparel conversion mapping S specifications into 19.

Analyzing Size Equivalence Across Markets
US: S: Corresponds to a wrist circumference baseline of 15 (5.9 ), bracelet length of 16.5 (6.5 ), and fit classification Standard / Regular.
Europe Size 19: Corresponds to a wrist circumference baseline of 17.5 (6.9 ), bracelet length of 19.5 (7.7 ), and fit classification Standard / Regular.