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.

18 Reviews (4.7 out of 5 Grommets)

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Helpful gadget


This little flashing gadget DOES help me remember to drink water throughout the day. Even my assistant noticed it flashing and handed me my water bottle! I do wonder how long the battery will last (since it does the intermittent flashing throughout the night when I don't notice)...More > < Less


Hydration Reminder


This does blink to remind you to drink, but it doesn't fit well on cups like Yeti. Is better suited for a more slimmer bottle/cup. It works fine though.More > < Less


very pleased with purchase


Very happy with purchase of hydration reminder. I bought one for myself and one for my elderly mother who forgets to drink water. This fits ight on our water bottles and is an excellent reminder. Would recommend to anyone who sometimes forget to drink their water.More > < Less


So simple and it works!


As with most people, I need to drink more water. I saw this and thought, "what the heck, I'll try it." It actually works. I work from home and get caught up staring at my computer for hours. Not only does the Ulla remind me to drink water, it also gives me a reminder to stand up and stretch. Love it. This would be a great gift!More > < Less


It works!!


Was skeptical ... but has certainlt gotten me to drink more. Only worry is that I’ll forget to take it off my bottle before throwing it out!! Will buy one for my daughter who also doesn’t remember to drink enough!More > < 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. Except drink.