b&h Baby Bath Duck Thermometer
Best for: Best baby bath thermometer — cute floating duck with LCD display, red/green temperature alerts with beeping alarm. IPX7 waterproof, doubles as bath toy + room thermometer. 4.6★ with 80% five-star across 9,800 reviews.
Check price on Amazon →How we pick: we feature gadgets we’ve actually used or tested, score them honestly, and only recommend the ones that earn it. We may earn from qualifying Amazon purchases.
TidyHacks verdict
Video coming soon
We're filming the TidyHacks Short for this product. Subscribe on YouTube to catch it first.
Our review
This cute rubber duck does something genuinely important — it tells you the exact temperature of your baby's bath water and warns you with a red flashing light and beeping alarm if it is too hot. For first-time parents terrified of getting the temperature wrong, this is instant peace of mind.
Drop it in the bath and the LCD display immediately shows the water temperature in Celsius or Fahrenheit. If the water is below 89.6F (32C), the green light blinks — too cold. Between 89.6-102.2F — safe. Above 102.2F (39C), the red light flashes and the alarm beeps — too hot. It also works as a room thermometer when not in the bath, and has a built-in clock and timer.
The duck is IPX7 waterproof with a sealed battery (no battery door to leak). BPA-free PVC/ABS construction with no sharp edges — safe as a bath toy. Babies love reaching for it in the water. At under $13, it is one of the most affordable baby safety gadgets available.
The downsides: the sealed battery means you cannot replace it — when it dies (typically 6-12 months), you buy a new one. Some reviewers report inaccurate readings or the unit dying quickly. The button interface for the clock/timer is fiddly and the instruction manual is tiny. But as a simple, cute bath temperature safety tool, it does the job beautifully.
👍 Pros
- Red/green light + alarm tells you instantly if water is safe
- Floats and reads temperature in real time
- Doubles as a bath toy — babies love it
- Also works as a room thermometer
- IPX7 waterproof — sealed battery
- BPA-free, no sharp edges — safe for babies
- Under $13 — very affordable
- 80% five-star across 9,800 reviews
👎 Cons
- Sealed battery — cannot replace when it dies
- Some units die quickly (6-12 months typical)
- Clock/timer buttons fiddly to set up
- Instruction manual is tiny and hard to read
- 3% one-star — reliability varies
Specifications
| Type | Floating baby bath + room thermometer |
|---|---|
| Display | Digital LCD — Celsius and Fahrenheit |
| Alerts | Green light (safe), Red light + beep (too hot/cold) |
| Temp range | 32-122F / 0-50C |
| Waterproof | IPX7 |
| Material | BPA-free PVC/ABS |
| Features | Clock, timer, auto-off |
| Battery | Sealed (not replaceable) |
| Brand | b&h |
FAQ
What temperature alerts does it give?
Green light blinks below 89.6F (too cold). No alert between 89.6-102.2F (safe range). Red light flashes + beep above 102.2F (too hot). This covers the recommended baby bath temperature range.
Can I replace the battery?
No — the battery is sealed inside to maintain waterproofing. When it dies (typically 6-12 months of daily use), you replace the unit. At $13, this is still very cost-effective.
Is it safe as a bath toy?
Yes — BPA-free PVC/ABS with no sharp edges. The sealed battery compartment means no small parts. IPX7 waterproof. Designed for babies to play with in the bath.
Does it measure room temperature too?
Yes — when not in water, it displays the room/air temperature. Useful for checking your baby's room temperature.
More Baby & Kids reviews
Get the best Amazon finds each week
One short email. New reviews, viral finds and the odd deal. No spam.