HidrateSpark Steel Vacuum Insulated 620ml Smart Water Bottle keeps drinks cold for up to 24 hours. The bottle features a LED smart sensor “puck” which glows to remind you when it’s time to drink and tracks your water intake by syncing via bluetooth to the Hidrate app. Hydration Equation calculates your daily water goal using personal factors unique to you like age, height, weight, sex, elevation, exercise and more. The free HidrateSpark App syncs with your smart water bottle to track how much you drink, send glowing reminders and text notifications keeping your hydration on track each day. The app also keeps track of where your bottle was last synced, so you don’t have to worry about it going missing.