Rolex Caliber 3285

At its core, the movement features the Chronergy escapement, a lightweight and highly efficient system crafted from nickel-phosphorus that boosts energy performance by approximately 15% and enhances resistance to magnetism. The 3285 offers a robust 70-hour power reserve, a notable improvement over previous generations, and operates at 28,800 vibrations per hour (4 Hz) for smooth second-hand motion and consistent accuracy. It includes Rolex’s paramagnetic blue Parachrom hairspring, Paraflex shock absorbers, and a free-sprung balance with Microstella regulation, all of which improve stability, shock resistance, and long-term precision. As a Superlative Chronometer-certified movement, the 3285 is tested to −2/+2 seconds per day after casing—surpassing standard chronometer requirements. Combined with its independently adjustable hour hand and bidirectional 24-hour bezel functionality, the Caliber 3285 delivers one of the most advanced dual-time mechanisms in modern Swiss watchmaking.