I've been using this databank model since the late 70's, when the memory was more limited, and you couldn't change the battery quick enough to save the data! I still hate entering the data, and now I have more of it! I find I get about 5 years from each watch before something goes. I use all the functions daily,except the stop watch. The present models allow me to get the battery changed and keep the data. My last watch went cookoo when I was at the equator last spring. I don't know if it was the humidity, or the polarization, but the functions quit. Eventually they all returned except the divide function, and I really missed it. Got another databank. I am a female with a 5 3/4" inch wrist and find the resin bands work great for me. Only had one incident where the band broke. Would love for Casio to come out with colored resins in this model, also computer interface for data, and while I'm fantasizing, how about a "build your own functions" model where I can get GPS, foreign language and a host of other needs! I picked up a colored databank multi-lingual in Singapore (I haven't seen them offered in the USA), but I don't want to travel with multi watches. I keep watching the line, looking for the next best thing!