CHRONOMASTER El Primero Open
Automatic El Primero column-wheel chronograph movement Opening revealing the legendary beating heart of the El Primero movement Silicon escape-wheel and lever COSC-certified movement
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STEEL & RUBBER, SILVER DIAL
A modern chronograph icon. The Chronomaster El Primero in steel with a rubber strap, paired with a silver dial with an opening that reveals the high-frequency movement's regulating organ with silicon escape wheel and lever.
- 42 MMDiameter