LVL, a new fitness tracker that just launched on Kickstarter, seems a lot like any other wearable. It can measure your heart rate, track your sleep cycle, and monitor your caloric intake. But its main function is measuring hydration levels, and letting you know when you need to stop jogging with a mouthful of salt and drink some water.

The wearable uses a near-infrared light to measure your hydration levels, according to Business Insider, and will vibrate when those levels get too low. It's paired with an app that will show you a happy face if you're hydrated and a sad face if you're not, and give you curiously specific instructions about how many ounces of water you should drink at any given time.

Or just don't forget to drink water

LVL's CEO Dustin Freckleton claims the tracker is the "first and only" wearable to measure dehydration, which might be true if you argue that other fitness trackers are measuring hydration (Fitbit added hydration sensors to its wearables recently).

Look, LVL is not a completely unattractive thing to put around your wrist, but it's also not completely necessary. The verdict is still out on how accurate its measurements are (its Kickstarter claims it's been tested on 250 people). Plus, it's unlikely drinking one more or one less ounce of water per day is going to make a difference in your life. It's already been proven that the "eight glasses of water" thing is a myth. Drink water when you're thirsty, when you're working out, and when you haven't in a while. Generally, a good rule of thumb is: don't forget to drink water.

The bands come in a black silicone, black leather, or brown leather. The Kickstarter page says the wearable will retail for $199, but you can preorder it for $99. It is currently set to ship in the summer of 2017.