A:AnswerI do not think you can. You should call Casio Technical Support to confirm. 1-800-435-7732 during regular business hours (currently Monday-Friday 9:00 a.m. - 8:00pm EST for all products, Saturday / Sunday 10:00 a.m. - 8:00 p.m)
A:AnswerIt has 5 alarms that can be set for one-time or daily, but not a vibration mode. I suggest visiting www.casio.com to review the whole product line.
A:AnswerIt is stated by the manufacturer to be 100 meters water resistant. I have not tested this for that feature. I can say it holds up well in showers and other basic things where the watch gets wet but is not submerged for periods of time such as swimming or diving.