Perfect product for those of us who don't drink enough water
Although it IS a nagging device, it does help increase your fluid intake.  I went from about 8 oz a day to 32 oz. It's pretty painless as the device just flashes at you.  Much better than a alert with sound.  It is also smart because it doesn't go off at night which would be very annoying.  It fits over any water bottle so its good if you have your own or are using purchased water bottles.  All in all it is just what the doctor ordered, literally.  Good product, good price.
Rating: 5 stars