TimexEasy Reader 38 mm Watch

Q: How long does the battery last?

Well it says 10 years... if not just remember the year you bought it and they will send you a new battery to help that part of the warranty. Because no battery last 10 years.... I'm guessing 5 to 6 years avg use!

Q: will this watch track the correct date for each month?

No. You have to change the date by hand if the month has fewer than 31 days. I think that's what you are asking.

Q: What's the difference between timex tw2p759009j and timex tw2p75900 (https://amzn.com/b01448xniy)?

The respondent that said they're the same is mistaken. If you compare item specs, the band material used on the TW2P759009J is synthetic leather, hence it's priced about 20% lower. The color and texture is noticeably different, so make sure you received the right product.Well, I guess the watch itself is probably the same, which might be what he/she meant, but the wrist band is not.