servicing

Zenith El Primero Chronometre Moonphase full servicing

Zenith ‘El Primero’ 410 CHRONO Moonphase full servicing Photos by Finn Marjoram Let’s review a nice example of the Zenith El Primero chronograph Cal. 410 – We’ll breakdown the full servicing process and some watchmaker pros and cons. We disassemble the whole movement to service. El Primero servicing cons – Too many parts! Too may

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Breitling Super Ocean Chronograph Servicing

Zenith El Primero Chronometre Moonphase full servicing