You said, its for your dad right? for GOD sake, do't buy cheap armingtron or Timex. You Dont want to make him upset in few months. I would rather work few extra hours or cut my soda and coffee to buy little better one.

Go for Citizen ECO_DRIVE. They are beautiful, not that light like timex or casio and dont need to change battery at all, although they run on battery.
Its for your dad, so choose one with a medium (on bigger side) dial. I am wearing ECO_DRIVE for last 9 years, no problem.
I had bought Fossil for my DAD 2 years ago (spend about $80.000 then) and did not last more than a year, Although My dad did not say anything, but you can imagine how frustated he must have had.
Last month, ECO-Drive was on sale on Amazon and on Macy's as well. MSRP around $265. I paid, $165 on Macy's. And remember, if you buy on Macy's " MAKE SURE YOU ASK FOR EXTRA DISCOUNT FROM SALES PERSON", They always give you 5-15% ONLY IF YOU ASK.
SO far, I have bought 4 watches from Macy's and always got discount. and IF you open a new account, you get 15% discount as well.
In Myc ase, I use macy's card and always get 15-20% discount coupon mailed.
And remember, they are always desperate to make members so, dont worry, if you dont have SSN, you can tell that to Sales guy at the store and they can use your school ID number or something like that.
Thats what my wife did about 2 yrs ago.
AND CHECK on amazon.com too (Not from salers on amazon, AMAZON itself).
GOODLuck and thanks for being nice to your DAD.
How about this one for $150.00, they come with 5 year warranty as well. I just checked one, there are many too choose.
http://www.amazon.com/Citizen-BM6060-57F-Eco-Drive-Titanium-Bracelet/dp/B000GDC5KO/ref=sr_1_5?s=watches&ie=UTF8&qid=1307583698&sr=1-5