Would this fit a wide mouth HydroFlask?

Yes! It fits my 32 oz wide mouth Hydroflask perfectly. :)

How do you change the battery?

Simply take off the cap and you will be able to remove the battery and replace it with a new one.

Will it work if you use a straw on your water bottle? To track your drinking

Yes as long as you move the bottle/pick it up. It works by motion.

How long will the light blink to remind you to take a sip?

Hello, the light blinks for 1 minute or until you pick up the bottle.

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Ulla Smart Hydration Reminder

Product ID: 259466702

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Details

Colour
Solid White
Shape
Cactus
Material
Glass
Finish type
Polished
Light source type
Light Emitting

💧Hourly hydration alerts

🔆Auto day/night sensor

🤳Motion-activated snooze

Description

💧 Stay ahead of dehydration—because your hustle deserves hydration.

NEVER MISS A SIP - Blinking reminder every hour keeps your hydration game strong.
SMART SENSOR SYNC - Automatically powers off at night and wakes with daylight for seamless use.
UNIVERSAL BOTTLE CLIP - Attaches effortlessly to any water bottle, making hydration stylishly simple.
LIGHTWEIGHT DISCREET - At just 0.03 kg, it’s the hydration companion you’ll forget you’re wearing—until it reminds you.
MOTION ACTIVATED SNOOZE - Just take a sip to silence the alert—hydration made intuitive.

The Ulla Smart Hydration Reminder is a lightweight, clip-on device that attaches to any water bottle and blinks hourly to remind busy professionals to drink water. It features a motion sensor to snooze alerts when you hydrate and a daylight sensor that automatically turns the device off at night and on in the morning, ensuring you stay optimally hydrated without disruption.

Specifications

Product Name	ULLA Hydration Reminder: Don't Be a Cactus
Weight	0.03 Kilograms
Units	1 Count
Brand	Ulla
Age Range Description	Adult

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$96

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TrustScore 4.5 | 7,300+ reviews