A great reminder!
I just started using this on my 40 oz Hydroflask at work, I'm a nurse and I have it right next to my computer so when I'm charting I see it.  It's great for me because I don't get that thirsty all the time and sometimes I will go the whole 12 hr shift, especially if I've been really busy,  and realize I haven't had any of my water.  But so far so good, the first two days I used it I drank the whole 40 oz, and the third day I filled it up again halfway.  I'm going to start using it at home now too.  Have yet to see about battery life and how long the band will last, but I'm happy so far!
Rating: 5 stars