I bought these batteries for a multi-function Suunto watch I've got, & so far I'm happy with them. The generic batteries that came with the watch when I first bought it lasted about 3 years, (with moderate use of the watch's functions), so we'll see how these batteries hold up to generics, heh. Right now it's 4 stars because even though these are DEF. the cheapest I've seen these batteries go for, I could "pay" for that later. Let's just say that this rating is just temporary & my REAL rating will be posted when I've seen how good these batteries really are. :-P