HAYAO FB-738 Emergency Whistle 3D Sensor Pedometer: Emergency whistle functionality
Joanna Stern here, and let me tell you about this gadget that’s like the Swiss Army knife of fitness trackers—if the Swiss Army knife also had a panic button. The HAYAO Emergency Whistle 3D Sensor Pedometer is that one friend who’s always prepared, whether you’re counting steps or counting on it to save your bacon in the wild. It’s sleek, it’s black, and it’s got this 3D sensor tech that’s so precise, it probably knows how many steps you took to the fridge last night. But here’s the kicker: it’s got an emergency whistle that’s loud enough to make a bear think twice. So, whether you’re trying to hit your step goal or just not become part of the food chain, this little gadget’s got your back.
- 3D sensor technology
- Step counting pedometer
- Durable black design
- Emergency whistle functionality
General specs
- Brand: HAYAO
- Model: FB-738
- Seller: Joom
- Sensor Type: 3D sensor
- Functionality: Step counting, Emergency whistle
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
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$51.61
Last price update: 8/7/25
Available to order
Shipping options
Delivery to 
United States
United States
Unavailable
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
HAYAO FB-738 Black Emergency whistle functionality
|
Premium SPEED FB-738 Yellow 3D sensor pedometer
|
HAYAO H-300BK 3D Acceleration Sensor
|
TANITA FB-739-BK Black Accurate step tracking
|
Premium SPEED FB-740 White 3D motion sensor
|
TANITA FB-740 Blue Black 3D sensor technology
|
|
| Brand | HAYAO | Premium SPEED | HAYAO | TANITA | Premium SPEED | TANITA |
| Model | FB-738 | FB-738 | H-300BK | FB-739-BK | FB-740 | FB-740 |
| Color |
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| Rating |
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| Price | $51.61 | $49.34 | $56.86 | $48.72 | $41.06 | $46.80 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 7, 2025 | August 5, 2025 | August 5, 2025 | August 5, 2025 | August 5, 2025 | August 6, 2025 |
| Sensor Type | 3D sensor | 3D Acceleration Sensor | 3D motion sensor | 3D sensor | ||
| Weight | Lightweight | Lightweight | Lightweight | Lightweight | ||
Emergency Whistle 3D Sensor Pedometer
$51.61
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