The ETA 2500 series represents a pivotal chapter in Swiss horology, serving as a foundational automatic movement family from the 1960s and 1970s. Produced by ETA SA, these calibers laid groundwork for later icons like the ETA 2824, emphasizing reliability in mid-century watchmaking.
Historical Context
Introduced during ETA’s expansion era, the 2500 family emerged as robust automatics for everyday luxury watches. They preceded modern workhorses, bridging manual-wind traditions with self-winding innovation amid quartz threats.
Key Technical Features
Automatic Winding: Bidirectional rotor ensures consistent power from wrist motion.
Jewels and Beat Rate: Typically 25 jewels, operating at 21,600 vph for smooth seconds hand sweep.
Power Reserve: Around 42-45 hours, suitable for daily wear.
Size and Functions: Compact diameter (often 25.6mm), supporting hours, minutes, seconds, and date complications.
Finishes Available: Standard to chronometer grades, with adjustments in multiple positions for precision.
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Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
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