https://bellabeat.com/product/spring/
Price: $79
Description:
Are you drinking enough water?
No more wondering. No more headaches caused by dehydration. Spring tracks your daily hydration and sends you regular reminders to help you establish a healthy hydration habit. It calculates the optimal amount of water for your body based on your activity level, age, height, weight, local weather and if you are pregnant or breastfeeding.
View your hydration data through the Bellabeat app, all you need to do is shake your Spring to sync.