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Rado 657 Diamaster Grande Seconde

Rado Caliber 657

Rado 657 Diamaster Grande Seconde

Caliber Number657
Base Caliber
ETA 2899 (2899-S2)
Movement TypeAutomatic, self-winding mechanical
Lignes11 1/2”’
Power Reserve~42 hours
Beat Rate28,800 (4 Hz)
Anti-Shock SystemIncabloc
Rotor Style
Ball bearing system
Hacking Seconds?Yes
Hand Count
FeaturesOffset hours and minutes dial; offset running small seconds subdial at 9:00, date at 9:00
Country of ManufactureSwitzerland, Swiss made
Known ModelsRado Diamaster Grande Seconde (Please add your watch in the comments below…)

What is often referred to as the Rado caliber 657 is actually an ETA caliber 2899. Click here for the ETA 2899 caliber listing.

Venus Caliber 178
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