25820ST
Royal Oak 25820 — 25820ST
1997–2011
Catalogued 1996, on sale from 1997. First dial plain grey without Tapisserie; from 2000 a “sapphire blue” Petite Tapisserie dial that collectors call “Yves Klein blue”.
629 sold 1997–2011.
No verified image of this watch yet
Identifying details
- Perpetual calendar
Calendar that accounts for month lengths and leap years.
- Moon phase
Variants of 25820
Reference overview →| Variant | Production |
|---|---|
| 25820BA | 1996–2008 |
| 25820STCurrent | 1997–2011 |
| 25820TA (tantalum and yellow gold) | 1996–1999 |
| 25820TR (tantalum and pink gold) | 1997–1999 |
Case & movement
- Reference
- 25820
- Production
- 1997–2011
- Case material
- Stainless steel
- Case diameter
- 39 mm
- Water resistance
- 20 m
- Movement
- Automatic
- Date
- Yes
- Caliber
- Audemars Piguet 2120/2802
Dial, bezel & hands
Movement
Audemars Piguet 2120/2802
Successor of the 2120/2800 adding a leap-year indication; made in classic and openworked forms and used in the Royal Oak 25820 and 25829 from 1996.
Automatic · Introduced 1996 · 19,800 vph · 38 jewels · 40 h reserve · Ø 28 mm · 4 mm thick