This Tech-Driven Smart Water Bottle Held Me Accountable For My Hydration Habits

The big difference that mattered to me between the HidrateSpark 3 Smart Water Bottle ($60) and the HidrateSpark Steel is that the HidrateSpark 3 needs its batteries replaced after a few months, whereas the HidrateSpark Steel has a rechargeable battery. However, both pretty much have the same capabilities when it comes down to the specifics of the tech. If you prefer stainless steel bottles, colder water, or prefer rechargeable devices, I would go for the HidrateSpark Steel bottle. Otherwise, save $10 and get the HidrateSpark 3.