Hi gervasius,
I have the same problems as you with my Rangeman 9400!
The values of the clock don't match with real values.
I use the Rangeman only for having a certain orientation and I have never calibrated it.
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Hi @all
I am from Germany, 46 years Old and I am collecting G-Shocks since Casio started selling it.
My last G-Shock is the Rangeman GW-9400-1ER and it is the best G-Shock I have ever had. :-) Maybe I stop to collect watches, cause of having the non plus Ultra now! ;-)
Hope to find many...