I have the same watch and never had an issue. It's the same module as the other 3000's, just different case and band.

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So strange. And extremely frustrating

 

I would be frustrated too. At worst, it renders the watch unusable. At best, it's very annoying.

If it's not static electricity causing this, could there be some environmental factor in your house, like EMI (electromagnetic interference) or RFI (radio frequency interference)? If you listen to an AM (medium wave) radio in different parts of the band, do you hear a loud buzzing or other strong noise that covers the desired signal? If so, maybe this RFI is being picked up by the Multiband 6 antenna in the watch and causing it to reset. On the other hand, if the watch syncs successfully most of the time, this may indicate a lack of strong RFI. Just throwing out thoughts.

In any event, I couldn't live with a watch that behaved the way yours does. Good luck finding a solution.

 

I don't listen to Am radio ever. It happened a couple times at night, I sleep with the watch on. I would wake up in the morning and it would be reset. Funny thing is that my first one, went over a month and had no problems, then it was fine after one reset for about another month, then it reset 4 times in 3 days

 

Oh I see what you were saying now lol That I can test it by listening to AM radio, not that the AM radio was messing it up. I'll try and see

 

Just talked to Casio customer service and they said that it was an issue with some of the pro treks and they were still not sure what it was, but mostly magnets and static electricity. He said any model with I believe the number 3414 on the back was affected, which was on the back of mine. Looks like I'll be getting a prw3100 Instead

 

Very interesting. At least they were honest with you about it. Are you going to return the PRW-S3000 to the seller or is Casio exchanging it for a PRW-3100?

 

Static electricity seems to be the culprit. Today I took my 3000 on a hike, which I bought only a few days ago. On the way up everything on the watch was good. Somewhere on the way down I took off a wool layer against another wool base layer. The two usually generate a lot of static charge against each other. Some time after that I glanced down and the watch had reset itself to 1.1.2010. I returned the watch to Amazon. My Suunto never had this issue in the two years I had it.

I wonder if anyone had the resetting problem with the less popular PRG-300?

 

Static electricity seems to be the culprit. Today I took my 3000 on a hike, which I bought only a few days ago. On the way up everything on the watch was good. Somewhere on the way down I took off a wool layer against another wool base layer. The two usually generate a lot of static charge against each other. Some time after that I glanced down and the watch had reset itself to 1.1.2010. I returned the watch to Amazon. My Suunto never had this issue in the two years I had it.

I wonder if anyone had the resetting problem with the less popular PRG-300?

According to previous posts in the thread, this is a problem with some PRW-3000 (module 3414) models. It implied the PRW-3100 (module 3444) was not affected. The PRG-300 uses module 3443, so maybe it's OK too.

Edit: The PRW-3100 has the new STN display, which has a very wide viewing angle, so it might be worth considering.

 

I have the PRG 270 with the 3415 module. Every time I took off my fleece jacket in the winter, it would reset. Casio customer service told me that happens due to static electricity, so sorry, they said. It's a great watch so I just take it off before I take my jacket off. Fortunately, our winter only lasts about a month and a half here in Texas!

 

I had issues with my prw-3000 resetting (sometimes multiple times a day), returned it. I ordered a PRW-3100 and couldn't be happier- over a month and no resets. The STN negative display is also very nice and much easier to read then the prw-3000 negative display in all lighting conditions. For whatever reason, the time syncs much more reliably on the 3100 as well.

 

Thanks for all those who replied. I ordered the PRG-300 and in spite of my rubbing wool and fleece layers all over it, I have not been able to get it to reset. For those who have the PRW-3100, did you order it from Amazon? It doesn't seem to be as widely available as the 3000.

 

I just bought a Casio Protrek Model 3415 about a month ago and have experienced this same problem twice. The first time was within 1 day of unpacking it. I pressed one of the buttons and the watch zeroed its memory. Being a very new watch, I chalked that up to potential user error but made a mental note to watch out for it. Second time was yesterday when I looked at the watch but as soon as I pressed the Baro button, it zeroed its memory again. I had done about 5 hours of driving--a couple of those during daylight hours--so the watch should have been fully charged and did display "H" for about a week now.

So, I'm just asking anyone if Casio has fixed this problem (i.e. did Amazon just sell me old stock from their shelves, but newer products don't have this problem?) or should I look for another brand/model of watch?

I also find that I always have to override the barometric pressure when this happens. The sensor in the watch is about 150 millibars lower than the local weather reports.

 

If you're still within the return period, I'd send it back. I have the S3000 but haven't experienced any problems and I've had mine since it first came out.

 

Thanks Odie. Watch is being returned. GaryK30, I didn't realize that weather pressure was normalized to sea level. Thanks.

 

I was contemplating a PRW-3000 purchase until I heard about the static-induced reset problem. I contacted Casio about the PRW-3100, to find out if it was susceptible to the static reset problem experienced by some PRW-3000 (and PRG-270) owners. They acknowledge the problem and said that they have not had any reports of this problem occurring with the PRW-3100 (they also noted that they have a fix for the problem with the PRW-3000 and would replace the watch under warranty if static-induced reset was occurring.) Quotes from Casio posted to this thread: G Shock and Static Electricity

 

Second follow-up: Asked Casio rep about static-induced reset issues with the PRW-3500 (which uses the same 3414 module as the PRW-3000) and was told that Casio hasn't had any reports of the problem with this model.

 

Same reset problem with my prg650y. Haunting when it happens. So glad I've found out why it's happening. Anybody with any fixes?