Movement
Cloned 4401
Copies the AP 4401 (RO chrono in-house)
- Type
- automatic chronograph
- Power reserve
- 70 hours
- Beat rate
- 28,800 vph
- Jewels
- 40
How reliable is it?
Current Royal Oak Chronograph in-house caliber clone; flyback function.
How to spot it
Visible through sapphire; finishing scrutinized.