The venerable El Primero gets a first substantial upgrade (Cal. 3600) in 5 decades: 1/10 of a second, more autonomy, conventional crown positions, and revised chrono mechanics, clothed in a new old dress – ´Chronomaster Sport`
The venerable El Primero gets a first substantial upgrade (Cal. 3600) in 5 decades: 1/10 of a second, more autonomy, conventional crown positions, and revised chrono mechanics, clothed in a new old dress – ´Chronomaster Sport`