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So ETA has these 2 movements which I understand are basically the same except one has a date disc and one doesn't (see links below). And they both take the same battery. Am I correct to understand that everything else being equal, the no date disc version (F06.105) will have slightly longer battery life than the date disc version (F06.115)? Would it be realistic to think that if the 115 can last at least 5 years, the 105 would be able to last at least 6 years…
quartz movement with date disc & no date disc versions (battery life)…
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