Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
B57 Waterproof Sport Sport Smart Watch with Heart Rate and Blood Pressure Monitoring
Available Options
Current
Waterproof Sport
Alibaba
€10.53
Available to order
Features
- Waterproof.
- Heart rate monitoring.
- Blood pressure monitoring.
- Compatible with Android devices.
- Compatible with iOS phones.
- Suitable for women and men.
Product details
General specs
- Model: B57
- Model: B57
If you are interested in more details, you can find full information on the seller's page.
€10.53
Last price update: 9/22/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
The B57 is a sport smart watch suitable for women and men. It is waterproof and is compatible with Android devices and iOS phones.
Its stated monitoring features include heart rate monitoring and blood pressure monitoring.
Similar products comparison
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Sport Smart Watch with Heart Rate and Blood Pressure Monitoring Waterproof.
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Yinsung DT78 Heart rate monitor
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Kingwear KW19 Heart rate monitoring.
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LEMFO M1 AI Smart Watch Compatible with Android and iOS
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Azufit AK15 Compatible with Android and iOS phones
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Smartwatch with Blood Pressure and Heart Rate Monitoring Blood pressure monitoring
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|
| Brand | Yinsung | KingWear | LEMFO | |||
| Model | DT78 | KW19 | M1 | F8 | ||
| Color | ||||||
| Rating | ||||||
| Price | €10.53 | €15.18 | €9.66 | €37.40 | €19.14 | €11.10 |
| Seller | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba |
| Update | Sep 28, 2026 | Sep 28, 2026 | Sep 28, 2026 | Sep 28, 2026 | Sep 28, 2026 | Sep 28, 2026 |
| Product Type | Sport Smart Watches | Smart Watch | AI Smart Watch | Smart Watch | Smart Watch | |
| Compatibility | IOS, Android | Android IOS | Android, IOS phone | |||
Sport Smart Watch with Heart Rate and Blood Pressure Monitoring Waterproof.
€10.53
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