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🌊 Stay ahead of dehydration—don’t be a cactus, be unstoppable!
The Ulla Drink Water Reminder is a compact, smart light attachment that fits most water bottles and mugs, using US Navy-developed blinking technology and smart sensors to remind you to drink water every hour. With a 6-month battery life, no app required, and a universal silicone band, it’s designed for busy professionals seeking effortless hydration and improved health.











| ASIN | B07G2C1T69 |
| Battery Life | 6 months |
| Battery Type | CR2032 |
| Best Sellers Rank | #14,459 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #286 in Water Bottle Accessories |
| Brand | Ulla |
| Brand Name | Ulla |
| Color | Cactus |
| Customer Reviews | 4.3 out of 5 stars 2,296 Reviews |
| Item Weight | 4.54 g |
| Manufacturer | ULLA |
| Manufacturer Part Number | ULLACACTUS |
| Manufacturer Warranty Description | 1 year. |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | ULLACACTUS |
| Number of settings | 1 |
| Smart Home Compatibility | Smart Home Compatible |
| Unit Count | 1 Count |
B**T
It's wonderful!
I love this little thing! It has helped me increase my water intake substantially. I tend to have my water bottle sitting on my desk next to me all day and never touching it. Mostly because I get busy and forget. But my little cactus starts blinking and I pick it up and drink. I have tripled my daily intake since having it.
A**R
It works!
I'm finally drinking more water! I have ADHD and often forget to drink. I have reminders and a smartwatch that buzzes at me. Nothing has worked better than this. I'm a visual person so I guess I shouldn't be surprised, but my kidneys thank you for creating something so simple, yet effective.
B**E
Works for now, but concerned about durability
This thing 100% has been helping me stay on top of drinking water. The only thing I don't like is that there is no way to stop/pause the flashing - so I can't have it on the bottle in my bed room and there is no way to turn it off when not in use. The fact that it has been going off ever since unboxing makes me worry about battery life and durability. Without the ability to turn it off to ensure longevity, I am not really sure it is worth the price point as I am thinking I may need to replace it sooner than later.
T**K
Great reminder
Definitely drinking a lot more water! Little flash reminder is so helpful
K**K
No more daily dehydration headaches!
THIS THING IS AMAZING. I've had it 1 month now and not had a single dehydration headache!! MY BACKSTORY: I carry a water bottle everywhere and would sit with one on my desk at work daily, but I rarely would drink out of it. I simply carried it because I would suddenly feel thirsty if I didn't have it. I get a headache around 2-3pm daily like clockwork. I suspected it was dehydration since the rare occasion that I did manage to drink enough, I didn't get a headache, but I couldn't keep up with it. I tried various tracking systems, including the ones with the time printed on it to pace myself. None of it worked because I physically needed a reminder. I thought about setting a timer, but that would be cumbersome, disruptive, and not dynamic enough to shift with daily life. I found this reminder and was hesitant to pay $25. But, it was a lot cheaper than "smart" water bottles and I knew taking Motrin and/or Tylenol daily was not healthy. The cost was worth it after feeling this headache-free relief!! SIZE: It has a silicone band that fits well on my water bottle, which is about 3 inches in diameter. It definitely has enough stretch to fit on a 1L Nalgene, for example. The device itself is about 1.5" tall, 1" wide, and 3/8" thick. HOW IT WORKS: I timed it when I first got it to see how the cycling works. Every ~35 minutes it strobes for ~5 seconds, then is off for ~5 seconds, alternating that cycle for about a minute before it resets the 35 second clock. I usually grab it within those first 5 seconds, but if you're not around and it does 2 full cycles of 35 min/1 min flashing, it turns off until you drink again. It also resets the clock every time you drink and has a light that blinks whenever it registers you taking a drink. It's gotten to the point that my body has internalized the clock a bit; on many occasions it started strobing as I was reaching for a drink on my own! MY CONCERNS DIDN'T END UP BEING ISSUES: - I thought the "just drank" light would get set off a lot carrying my water bottle around, but that hasn't been an issue. - It also has a light sensor, because it doesn't go off in the dark. I can keep it on my nightstand with no issues - My water bottle has a straw, so every once in a while my sip is a little too still for it to register, but that's been only maybe 5 times in the last month. - It's also perfect everyday use outside of the office - I don't have to deal with alarms and it dynamically updates as I drink. - I keep it on all the time, and haven't worried about it falling off. I did take it off twice when I want on a day-long outing where I knew I'm going to be drinking a lot on my own and didn't want it to interfere with the frequent in and out of my backpack.
M**M
Works better when you're sitting at a desk.
This device appears to functioning properly, but the concept doesn't work well unless you're sitting at a desk job.
M**R
Staying hydrated and loving it!!
I absolutely LOVE this product!! It’s simple but impactful and it has absolutely helped me drink more water throughout the day than I have in the past several years. I have tried pop-up reminders on my work computer (Outlook), apps on my phone, reminders from my FitBit and posted signs near my desk but nothing helps like this blinking* light. I already had several reusable water bottles so I sought an accessory; this item is much cheaper than “smart bottles” and doesn’t need washed. :D It fits on water bottles of various sizes. The reusable bottle I have pictured (I have 3 of them) has a diameter of almost 3 1/2” (nearly 9cm) but the band also fits on a standard 16.9 oz. bottle and bottles larger than the one I typically use. The light blinks every 30-45 minutes to remind you to drink. After you drink it will light up slowly and turn off slowly so that means it has recorded you drinking and reset the clock. It does not blink all night while you sleep; the instructions explain it will go through about 2 blinking cycles and as long as it doesn’t sense movement, it will stop blinking until it senses movement again. The only caveat is that you need to have the bottle in front of you in order to see it - it doesn’t make any noise (like yell at you, which I would also likely respond to). So make sure you take the bottle from your work station to other rooms where you spend time outside of work. I work from home so I grab my bottle and move it at the end of the day. This item is currently unavailable, but the last time that happened they had some available a few weeks later; I hope there are more available soon!! *This product may not be ideal for those with light sensitivity or conditions like epilepsy because the light flashes quickly. If flashes about 10 times, then stops, and repeats that series twice more.* Happy drinking!! [[My additional tips for drinking more water from my research, if you’re interested, since I have been dehydrated to the point of being off sick from work 4 times in the last year: -Using a wide-mouth bottle may help you drink more during each session. -Aim to drink somewhere around 80 ounces per day; some sources suggest at least 80 oz. or up to half of your body weight in ounces, so if you weigh 200 pounds, you should drink 100 ounces of water…that’s a lot. -Water helps every function of your body, improves your skin texture, and can even impact your mood. -Drink between meals on this schedule: —8-16 oz. shortly after you wake up (helps rehydrate after your sleeping “fast” and activate digestion). —Drink 8 oz. before you get a shower (if you shower shortly after waking up, don’t drink extra water; this helps keep blood pressure stable). —Drink BETWEEN, not with meals, so a half hour before and 30-45 minutes after you eat (a few sips is fine but otherwise you’re filling up with unnecessary liquid and watering down your food; this is an “Eastern medicine” technique). I will pick up my water bottle and pretend to drink so that the clock resets and I can drink again after I eat to aid digestion. —Drink water at the temperature you prefer; I like room temperature water because I have sensitive teeth. If you like ice water, use an insulated cup. —Drink 8 oz. of water 30 minutes prior to starting physical activities and then occasionally during activity, if you’re able. You don’t need really need an electrolyte drink/anything more than water unless you’re working out very hard for an hour or more. —Drink 8 oz. right before you go to sleep; it shouldn’t be enough to wake you up to urinate overnight. —Coffee does count towards your daily water goal, however, it is a diuretic, so make sure this is not your MAIN water source. Coconut water is very good, however, juice, soda, alcohol, etc. don’t count. Drink some electrolyte water before you go to bed after drinking alcohol and also the next morning when you wake up. —I swear by electrolyte additives for water. Some have added B vitamins for energy (like “Liquid IV”) and others do not (like “Nuun” tablets, which I love). They really help no matter how much water you drink per day and provide a little natural flavor to plain water; I typically don’t use more than 1-2 per day. -If you’re starting a new diet, make sure to drink a lot of electrolyte-enhanced water when you start. This is due to losing water weight first and that’s where your body holds salt and electrolytes. This is part of the “Keto flu” that occurs when you start that diet.]]
V**R
Love it!
Really enjoyed this! It helped to timing me to drink throughout the day without disturbing my child, especially during naptime at the daycare I worked at
D**N
Muy útil
Si se te olvida beber agua como a mi, este aparatito va a hacer que te acuerdes si o si, además es monísimo, siempre lo llevo en mis botellas!
C**E
Motiverend hulpmiddel
Is een goed hulpmiddel om jezelf te motiveren om meer water te drinken.
S**F
Amazing!
This really encourages my daughter to drink water, as we all know hydration is key! I love this! By the way this can also be used for adults or teens who need to be reminded to drink water! This is for all ages!
T**Y
Sorprendente
Dudaba con este artículo pero la verdad es que funciona,te recuerda beber,claro está que tienes que tener la botella de agua donde tú te encuentres ya que no emite sonido solo una luz pulsada,pero realmente a mí me funcionó
A**E
Útil
Es pequeño y se pone con una liguita qué trae en la botella o en tu vaso y enciende cuando te ve pasar, y así recuerdas tomar agua.
Trustpilot
2 weeks ago
4 days ago