I replaced the battery. The watch started time from Jan. 1

Either a loose connection inside or it just needs a new battery. They can be power hungry depending on how you use it and what battery technology type was used in the last one.

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This same problem (watch resetting to 1/1/205) has happened to me 2x now, about 2 months or so apart.

I have had this watch for ~10+ years now, and works perfectly.

I have replaced the battery 2x.

Again, the watch works great.

I just realized that in the .pdf manual, there is no indication for a "low-battery" condition.

I am guessing that the "low-battery" is what is causing the watch to reset the date/time to 1/1/2005.

Any others having this same problem if this watch resetting to 1/1/2005 after the watch has run just great (auto time syncing, etc.)?

This watch Keeps great time!

Buster Brown

No, this is not a battery problem. Use your users manual and read how to reset time and date.

Your battery is on the way out.

sounds like the contact inside for the ligt button is stuck on. Remove the back again and take a look at the contact under the light button to see if it is stuck, if so, GENTLY pry it out a bit so it's not touching all the time...
GOOD LUCK

no, it changed automatically via the atomic satellite that changes all atomic clocks around the world. It so happens you bought a watch that was made in a different, much different time zone. You have been taken.

Yes I have the same problem exactly but I hadn't change the battery.

i have changed the battery on my and my wifes ebel classic wave watch,,
step 1 ...remove the crown by pulling away from the watch, use your thumb and index fingernail and pull , it will come out
step 2 ...remove all 5 gold bezel screws
step 3... be careful,, the bezel/crystal will pry off easy
step 4... be careful and remove the entire face/hands/watch guts all in one easy step,, or just turn the watch over and it will fall out
step 5.. small screwdriver and remove/replace battery
step 6... reinstall watch guts/bezel and gold screws
step 7... push crown back into watch
step 8... take wife and kids to dinner ,,you just saved three hunderd bucks
if have done it many times ,, you can do it !!!!