The ETA 2834-2 is a name that resonates with watch enthusiasts, particularly those interested in the history of Rolex and its sister brand, Tudor. While not a movement designed or manufactured in-house by Rolex, the 2834-2 played a significant role in their production, offering a reliable and robust automatic movement for a range of their models, most notably within the Tudor Prince line. This article delves into the specifics of the ETA 2834-2, its characteristics, its accuracy, and its importance within the context of Rolex and Tudor's watchmaking history.
ETA 2834-2: A Detailed Examination
The ETA 2834-2 is a self-winding (automatic) mechanical movement. Its architecture is a classic example of Swiss watchmaking ingenuity, utilizing a robust design that prioritized reliability and longevity. Key features include:
* Automatic Winding: The movement features a rotor that winds the mainspring as the watch is worn, eliminating the need for manual winding. This automatic winding mechanism is efficient and reliable, ensuring consistent power reserve.
* Date and Day Complications: The 2834-2 is a "day-date" movement, meaning it displays both the day of the week and the date. This added functionality enhances the watch's practicality and appeal. The date is typically displayed in a window at the 3 o'clock position, while the day is displayed in a separate window at the 12 o'clock position. The quick-set mechanism for both date and day allows for easy adjustment.
* KIF Shock Absorber: A crucial element differentiating the 2834-2 used by Tudor (and Rolex in some instances) from standard ETA movements is the inclusion of a KIF shock absorber. While many ETA movements employed Incabloc or Novodiac shock protection systems, Tudor opted for KIF, a system known for its effectiveness in protecting the delicate balance staff from impacts. This choice reflects Tudor's commitment to robustness and longevity, even when using a third-party movement. This consistent use of KIF across their movements during this period underscores their dedication to a particular standard of shock protection.
* Frequency: The ETA 2834-2 operates at a frequency of 28,800 beats per hour (8 beats per second), a common frequency for automatic movements. This relatively high frequency contributes to improved timekeeping precision compared to lower-frequency movements.
* Jewels: The movement typically contains 25 jewels. These jewels are strategically placed at points of high friction within the movement, reducing wear and tear and improving the overall longevity and smoothness of operation.
* Power Reserve: The ETA 2834-2 offers a power reserve of approximately 38 hours. This means the watch will continue to run for around 38 hours after it's fully wound, before needing to be wound again (either manually or through the automatic winding mechanism).
ETA Cal. 2834-2: Variations and Modifications
While the ETA 2834-2 is a relatively standardized movement, there might be subtle variations depending on the specific watch manufacturer and the year of production. These variations could include minor adjustments to the finishing, decoration, or even the inclusion of specific components. However, the core functionality and architecture remain consistent across different implementations of the 2834-2. The "Cal." designation simply indicates that it's a caliber, or a specific model, of the ETA movement family.
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