Here are the key specs of the Audemars Piguet Royal Oak Selfwinding Stainless Steel — Specification Details Brand Audemars Piguet Collection Royal Oak Selfwinding Reference 15510ST.OO.1320ST.07 Movement Type Self‑winding Automatic (Caliber 4302) Caliber AP Caliber 4302 (in‑house movement) Functions Hours, Minutes, Small Seconds, Date Power Reserve ~70 hours Jewels 32 Frequency 28,800 vph / 4 Hz ( Case Material Stainless Stee Case Diameter 41 mm ([turn0search0], [turn0search5]) Case Thickness ~10.5 mm ([turn0search3], [turn0search5]) Dial Black “Grande Tapisserie” pattern with white gold markers & luminescent hands ([turn0search1], [turn0search5]) Crystal Sapphire crystal, glare‑proofed ([turn0search5]) Caseback Sapphire exhibition caseback ([turn0search1], [turn0search5]) Bracelet Integrated Stainless Steel with AP folding clasp ([turn0search1], [turn0search5]) Water Resistance 50 m / 5 ATM ([turn0search5]) Style / Gender Luxury sports watch / Men’s & Unisex Origin Swiss Made
