download citizen chronomaster aq4020 54y

Citizen and GS use very hard metal and lapidaries, it's just not possible to do better and both are strictly equivalent.įor movement, they are A060 with double quartz individually paired, aged, readjusted. The only Swiss equivalent of these indexes are the Rolex Au-Pd indexes for the new day-date dial Roman numerals. Apart from a technique that would come from the future where the defects of less than 0.1 micron would be erased or if the dials were made of silicon crystal cut in a precise atomic plane, with metal it is impossible to do better in large series. Technically, on metal, it is impossible to do better. (.) GS makes diamond indexes and polished to the lapidary.

The non-mechanism of QP of the citizen is a marvel, and for all that it works well, they all rotated on bearings in rubies, 31 in total.

The only thing to grease is the seals and the timer. 'The Thermocompense of Citizen n ' is not lubricated (there is no force in a quartz movement). I have not finished reading it, but I came across this, google translated from French: There is a long thread about this watch in a french watch forum. That’s over five times more precise than international standards require.I came across this watch a few days ago and the more I learn about it the more impressed I am. Why are we referencing all these numbers? Because Citizen’s Chronomaster timepieces are accurate to ±5 seconds a year. While the typical quartz timepiece maintains a ☑ second a day average and good quartz timepieces make ☑5 seconds a month, by COSC standards, a quartz chronometer holds a requirement of ☒5.55 seconds a year. Some quick numbers to note: according to the Contrôle Officiel Suisse des Chronomètres (COSC), mechanical tickers are considered to be highly precise when they maintain a rate of −4/+6 seconds per day. As a result, high-precision quartz timekeeping is making a strong comeback. This redefinition is in no small part due to the presence of smartwatches, which are driving forward digital timekeeping efforts. In recent days, however, there’s been increasing interest in redefining electronically assisted timekeeping – quartz-powered timekeepers are no longer simply the more accessible option. At Revolution, we’ll be honest in saying that we’re a tad biased towards mechanical watchmaking.

Download citizen chronomaster aq4020 54y