Grade classification: Unused Brand: Audemars Piguet Model: Royal Oak Chronograph Model Number: 26331ST.oo.1220ST.01 Dial color: Blue and Silver Material: ss Movement: self-winding Size: men's Case diameter: approx. 41 mm (excluding crown) Water resistance: 50 meters Functions: chronograph, date display Accessories: Box (slightly damaged), Warranty Card (September 2021), Manual Comments: Never used, never displayed.