1. Caliber 3235
Series: Submariner, Datejust, Yacht-Master, Sea-Dweller
Highlights:
- 70-hour power reserve, a significant upgrade from earlier models.
- Chronergy escapement for improved energy efficiency and magnetic resistance.
- Paramagnetic blue Parachrom hairspring enhances precision in extreme conditions.
- Widely used in modern sports and classic models, making it Rolex’s flagship movement.
2. Caliber 3255
Series: Day-Date, Presidential
Highlights:
- Precision: Achieves -2/+2 seconds per day, exceeding COSC standards.
- Syloxi silicon hairspring for anti-magnetic performance and thermal stability.
- 72-hour power reserve, ideal for high-end dress watches.
- Symbolizes luxury and technical mastery in Rolex’s flagship dress collection.
3. Caliber 3285
Series: GMT-Master II, Explorer II
Highlights:
- Dual time zone function with independent jumping hour hand.
- Chronergy escapement and Parachrom hairspring for reliability.
- 70-hour power reserve, tailored for globetrotters and adventurers.
- A cornerstone of Rolex’s travel-oriented watches.
4. Caliber 4131
Series: Cosmograph Daytona
Highlights:
- Vertical clutch mechanism for smoother chronograph operation.
- 72-hour power reserve with optimized rotor efficiency.
- Monobloc Cerachrom bezel integration for durability.
- Represents Rolex’s racing heritage and technical innovation.
5. Caliber 9002
Series: Sky-Dweller
Highlights:
- Annual calendar (Saros system) and dual time zone in one movement.
- Ring Command bezel for intuitive function adjustments.
- 72-hour power reserve with paramagnetic components.
- Rolex’s most complex movement, designed for sophistication and utility.
