I've bought 4 of these over the years, so far.  They keep excellent time which is what I wanted them for.  The only problem is that the band tends to break after about 3 or 4 years, and it is extremely difficult to replace it. In fact, it is a hassle and usually requires replacing the little pins;  when you consider the cost of the pins and replacement band, it's less trouble just to buy a new watch.  From what I've seen, the battery lasts a good 8-10 years or more.  I still have 2 of the watches that I've had for many years, both with broken bands, and they still keep perfect time.  They have stop watch function as well as other bells and whistles that I never use.  When the band on the one I'm wearing now breaks, I guess I'll buy #5