Bought my first one of these Casio model watches years ago and wore it through thick and thin.  Original battery lasted
about 8 - 10 years before it died and had it replaced at a mall kiosk.  that one went about 4 years.  Had a new one put in
at a jewelery store ($25) right before Christmas and it quit only after about 6 weeks.  Although it will perform other stopwatch and timer functions I never use them; which probably accounts for the long initial battery life.  Finally dawned on me that I could buy a brand new one for $25 and just skip replacing the battery.  I bought a new type watch band at the same time because the original one on the other AQ150W broke way before it should have.  Noticed other owners that also listed gripes about the band.  Otherwise, you will be hard-pressed to find a better more dependable and accurate watch regardless of price.  It's very light on the wrist and not too large.  I'll keep replacing them as long as Casio keeps building them.  My second favorite is an old stand-by Wenger Swiss Army model which only displays the date.  Bought it on Amazon many years ago for less than $100.  Original battery is still ticking along..