# Audemars Piguet Royal Oak Perpetual Calendar Blue Dial

- **Canonical URL:** https://swissclone.com/product/audemars-piguet-royal-oak-perpetual-calendar-blue-dial/
- **SKU:** SW-20939
- **Price:** $940 USD
- **Availability:** InStock (48h Digital Timegrapher Video QC Included)
- **Primary Macro Image:** https://swissclone.com/wp-content/uploads/2026/09/audemars-piguet-royal-oak-perpetual-calendar-blue-dial-904l-1-1-super-clone.webp

Put the Audemars Piguet Royal Oak Perpetual Calendar Blue Dial on a digital scale next to a boutique example and the numbers match within a fraction of a gram. Machined by APS / ZF Factory from Solid 316L Stainless Steel (Satin & Mirror Finished), this reference pairs a 41MM × 10.4mm (Octagonal Bezel with 8 Hex Screws) silhouette with an anti-reflective sapphire crystal that eliminates milky edge distortion. Inside beats the APSF / ZF Cloned Calibre 4302 / 3120 / 2121 Automatic (60–70 Hour Reserve (28,800 vph)), giving the seconds hand a crisp 28,800 vph (8 ticks per second) sweep.



### Dial Typography, Lume Application & Clasp Mechanics


Where cheaper builds cut corners on bracelet articulation and rehaut laser etching, APS / ZF Factory chamfers the underside of every link so the watch drapes naturally across the wrist. The crown threads down onto twin Viton O-ring seals without grit or play, and the dial markers sit dead-center against the minute track under 10x loupe magnification.



### Individual QC Video & Triangular Express Logistics


We never ship blind from a warehouse shelf. Within 48 hours of ordering the Audemars Piguet Royal Oak Perpetual Calendar Blue Dial (Ref. SW-20939), our watchmakers film your watch running live on the timegrapher and pressure tester so you can verify dial alignment, amplitude, and beat error firsthand. Once approved, it dispatches via customs-cleared express courier with a 3-year mechanical warranty.