Manage your hydration the high-tech way with this Trago smart cap and bottle. Its sonar technology tracks the exact amount of fluid in the container, and it's powered by a standard coin-cell battery that lasts up to six months. This Trago smart cap and bottle syncs with a smartphone app to monitor your fitness data.
I like the cap a lot. The bottle however does not hold cold as it says it does. It also says that it doesn't sweat. It has on a few occasions. The rubber stopper comes loose and you have to make sure that it is in place before closing the lid or it will leak. The cap itself does a nice job collecting data on how much you have had to drink. If you are in a place where there is no signal for your phone, than you have to wait until you are somewhere where there is a signal before you can see your data.