Watchmaking & Tinkering - Reference Materials
I have a Citizen Nighthawk that has a timekeeping problem.
Citizen Black Nighthawk Eco-Drive model CA4377-53H with B612M calibre
Symptoms: Watch charges, chrono hand works, both start/stop and reset are good but time (hr, min, secs) hands not moving, neither is the date dial.
What i've...