Eco-drive tech is advertised as "You'll never need a new battery". Hearing that I would assume the the capacitor should last for at least 8-10 years. Tho after 4-5 years it started to constantly loose time, and the only way to prevent it is actually let watches absorb sunny daylight for a day or two. Unfortunately it will keep them juiced-up for another week, may be two, and than it repeats. Chronograph second hand sits off by almost a full second at it's rest position (12:01 instead of 12:00). Not a deal-breaker, but just tells something about QA/QC at your factories. Chrono start button feels flimsy. Band starting to fall apart after 3 years of wear. Again, not a big deal, as it just made me put this watch on Nato strap, which I think works much better anyway. I'd give it 7/10, but I feel like 8/10 (4/5) is too much, as there are obvious flaws with a watch. So 3 starts seems to be fair. P.S. Citizen, please do more less than 42mm watches!