Hydration Reminder Bottle Accessory

By Ulla


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Get subtle hydration reminders to help you drink eight glasses a day. Ulla turns your drinking vessel into a smart water bottle. The silicone band fits over a bottle or glass, with an accelerometer inside to track movement. Go more than 30-40 minutes, and Ulla’s light will blink.

  • Materials: BPA-free polypropylene, ABS plastic, silicone band, CR2032 battery, LED light
  • Includes one silicone band, one hydration reminder device, one changeable CR2032 coin cell battery, user manual
  • Instructions: Remove the plastic tab from the battery to power the device. Place silicone band around water vessel, mount device on the band with the narrow end facing down
  • Features: LED reminder light, vibration sensor, accelerometer, and light sensor
  • Fully automatic, built-in light and vibration sensors allow it to turn on and off automatically
  • LED flash reminder stimulates peripheral sight, flashes every 30-40 minutes
  • Slow LED blink indicates when a drink is taken and timer has been reset
  • Silicone band fits on any water bottle or glass
  • Hydration reminder activates only when it hasn’t been picked up
  • Device is splash-resistant
  • Turns off automatically after two missed hydration cycles
  • Six month battery life, uses CR2032 coin cell battery
  • Note: Most effective for office or home environments, the accelerometer may mistake movement for drinking. As a result, it will not remind you to hydrate as frequently as it would if not in motion
  • Recommended for ages 6+
  • Made in Slovenia, EU
  • Dimensions: 1” x 1” x 0.25
  • Weight: 0.063 lb.

29 Reviews (4.8 out of 5 Grommets)

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Certainly reminds you!


No avoiding the blinking light...which is good but can be annoying. Maybe annoying because it tells me how many times I forget to hydrate. Only complaint is I wish I could turn it off so when I know I am not going to be using it I could save the batteryMore > < Less




This is the best reminder for drinking my water. Love this easy to use product.


I absolutely love this thing!


I was hesitant to purchase this at first but I'm so glad I did! I am usually pretty good about having water nearby, but I find that I often get busy and forget to drink it. I tried reminders on my phone but they were more distracting than helpful. The Ulla's blinking light is subtle but hard to ignore, and having to lift to stop the blinking makes it extremely effective.More > < Less


Great reminder!


Love it, it’s a great reminder to drink water! But sometimes it does blink and I’ve just drank. I’m wondering if/when I’ve missed two or three of the drink water alerts, it then makes you catch up!!?? Which is probably a good idea. It’s amazing that it starts blinking once I’m back in the room I’ve forgotten it in! My husband thinks it’s a riot. But also realizes it works great!! Thank you for creating it!! I can’t wait to see how long the batteries last!! ; )More > < Less




This has been a great factor in reminding me to drink. I try to take it with me and I do not want it to blink.
Thank you Jennifer

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Your water bottle is blinking. Take a sip.

About Ulla

Hydration reminder

Ulla turns your drinking vessel into a smart water bottle that gives you hydration reminders during your busy day.

It’s a silicone band that fits over a bottle or glass. Inside, an accelerometer, which tracks the band’s movement, knows when it’s been a while since you’ve taken a sip. Go more than 30-40 minutes without some H2O, and when you’re nearby (the band’s sensors will know that), Ulla’s light will blink.

Several of us tried it out here at Grommet headquarters, and were grateful for the reminder to stay on track to drinking our eight glasses a day.

Put Ulla in place, and you don’t have to do anything else. Except drink.