The ETA 2671 and ETA 2550 are not the same; they are two different mechanical watch movements produced by ETA, a renowned Swiss manufacturer. Here’s a comparison of these two movements:
ETA 2671:
- Type: Automatic movement
- Size: Smaller with a diameter of 17.2 mm and a height of 4.8 mm
- Jewels: Typically 25 jewels
- Power Reserve: Approximately 38 hours
- Functions: Hours, minutes, central seconds, date, with some variations offering quickset date
- Usage: Due to its smaller size, the ETA 2671 is commonly used in smaller watches, such as women’s watches or compact unisex models.
ETA 2550:
- Type: Automatic movement
- Size: Larger with a diameter of 25.6 mm and a height of 5.5 mm
- Jewels: Typically 17 jewels
- Power Reserve: Around 38 hours
- Functions: Hours, minutes, central seconds, date (some versions have day-date)
- Usage: The ETA 2550 was used in men’s watches or larger unisex models, as its size is more suited to larger cases.
Key Differences:
- Size: The ETA 2671 is significantly smaller than the ETA 2550, making it more suitable for smaller watch cases.
- Jewels: The ETA 2671 generally has more jewels (25) compared to the ETA 2550 (17), which could potentially offer smoother movement in specific components.
- Applications: Due to their size differences, these movements are typically used in different types of watches.
Conclusion:
While both are automatic movements from ETA, the ETA 2671 and ETA 2550 differ primarily in size and the number of jewels, making them suitable for different watch designs. The ETA 2671 is designed for smaller watches, while the ETA 2550 is used in larger watches. They are not interchangeable due to these size differences.
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