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

35 Reviews (4.8 out of 5 Grommets)

Sorted by Rating


7/4/2019 by Ptrisha

Love it.. LOVE it... L O V E itttt! I bought this in teal. It Works exactly as promised and it really gets my attention. Easily noticed even in my peripheral vision. I have upped my water intake drastically THANK YOU!More > < Less


great idea!

6/28/2019 by Jillian

I am always dehydrated! this little gadget is a wonderful way to be reminded to drink. No more dehydration problem!



3/5/2019 by Nancy

I love the reminder to drink water. Makes a Hugh difference in my water consumption. Bought another for my mom.


Handy reminder

2/25/2019 by Katherine

This little light is a dandy reminder for me to drink more water. I fill my insulated bottle with cool water, sometimes add ice, and set the bottle where I will see the flashing. I'm feeling better just because I am drinking more water. My doctor said I was dehydrated but I didn't think I was because I wasn't thirsty. You don't have to be thirsty to be dehydrated. This is a good way to remember to drink...water.More > < Less


Certainly reminds you!

1/26/2019 by Cecilia

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

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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. Just drink.