I searched the boards for a definitive answer to this and couldn't find one. As batteries age while in use, does the watch slow down? I have a new to me MRG-100T that keeps pretty good time IMHO (+6 seconds in 2 weeks which I can certainly live with). The watch has a brand new battery in it. I'm curious if half way through the battery life the watch will be closer to perfect timekeeping and as the battery life reaches the down side of its lifespan, the watch will begin to lose time. Could the Casio engineers have designed this in or do the batteries and watch not work this way? I'm not sure but I think some long term non-atomic G owners might have some knowledge here. All of my other G's are atomic - solar.