Your evaluations are very interesting. I however wonder how you manage to measure the decimal fraction of a second, what kind of calibration apparatus are you utilizing?
Eco Drive Accuracy Report...
...mostly anyway. After gaining a fair few Citizen Eco Drives during the past year or so, i set them all to atomic time at the beginning of the year and have kept tabs on how they've performed purely for my own amusement.
I thought id share the results with the members here and invite others to let us know how their eco drives have been performing. Maybe we can get a fair idea how these movements perform if we get a large enough database. Obviously all radio controlled models should be excluded from this, (even though two of mine are rc, as im in oz, none receive any signals and thus only operate as standard quartz).
my rate results (all watches except where noted set on 28/1/10):
Citizen AS8009-53E = +4sec/month
Citizen Calibre 2100 = -2sec/month
Citizen Nighthawk = +4sec/month
Citizen World Time = +6sec/month
Citizen BJ2120-07E = +8sec/month
Citizen BN0065-55E = +8sec/month
Citizen JP3040-59E = +3sec/month (digital display)
(battery powered) = -5sec/month (analogue display)
Citizen PMD56-2972 = +/- 0sec/month (measured 2wks only)
Citizen JR3090-58M = +4sec/month
Citizen BL5280-52W = +9sec/month
and as a reference from two others i measured:
Casio EF-524SP-1A = +10sec/month (measured 2 wks only)
Tissot T-Touch = +2sec/month
I hope this was of interest to someone
![]()
...surprised?, as expected?, let us know what you guys are getting.
This is my first post here, i see many regulars from other joints ^-^ , pleased to be here, thanks for the invite John, cheers.
I thought id share the results with the members here and invite others to let us know how their eco drives have been performing. Maybe we can get a fair idea how these movements perform if we get a large enough database. Obviously all radio controlled models should be excluded from this, (even though two of mine are rc, as im in oz, none receive any signals and thus only operate as standard quartz).
my rate results (all watches except where noted set on 28/1/10):
Citizen AS8009-53E = +4sec/month
Citizen Calibre 2100 = -2sec/month
Citizen Nighthawk = +4sec/month
Citizen World Time = +6sec/month
Citizen BJ2120-07E = +8sec/month
Citizen BN0065-55E = +8sec/month
Citizen JP3040-59E = +3sec/month (digital display)
(battery powered) = -5sec/month (analogue display)
Citizen PMD56-2972 = +/- 0sec/month (measured 2wks only)
Citizen JR3090-58M = +4sec/month
Citizen BL5280-52W = +9sec/month
and as a reference from two others i measured:
Casio EF-524SP-1A = +10sec/month (measured 2 wks only)
Tissot T-Touch = +2sec/month
I hope this was of interest to someone
This is my first post here, i see many regulars from other joints ^-^ , pleased to be here, thanks for the invite John, cheers.
