The movement is the A060, a High Accuracy Quartz Eco-drive movement. The case is titanium and 37.5mm in diameter. I have been looking for it for two years, so as soon as I saw it for a great price on Ebay, I pounced. This green dial variant was a limited edition version back in 2019. That’s over five times more precise than international standards require. This is the Citizen 'The Citizen' Chronomaster AQ4020-54X. 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.
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