Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
B57 Blood Pressure + Heart Rate Waterproof Smartwatch with Blood Pressure and Heart Rate Monitoring
Available Options
Current
Blood Pressure + Heart Rate
Alibaba
€11.55
Available to order
Features
- Blood pressure monitoring
- Heart rate monitoring
- Waterproof
General specs
- Model: B57
- Seller: Alibaba
- ID: 62413368335
- Model: B57
- Health Metrics: Blood Pressure, Heart Rate
- Water Resistance: Waterproof
- First listed by seller: September 22, 2026
If you are interested in more details, you can find full information on the seller's page.
€11.55
Last price update: 9/22/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
The B57 smartwatch is a waterproof smartwatch with blood pressure monitoring and heart rate monitoring.
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| Brand | KECHAODA | LEMFO | Domiwear | Microwear | ||
| Model | B57 | M4 | LEMT | DM100 | KW19 | L9 |
| Color | ||||||
| Rating | ||||||
| Price | €11.55 | €14.94 | €116.96 | €104.95 | €10.14 | €31.93 |
| Seller | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba |
| Update | Oct 2, 2026 | Oct 2, 2026 | Oct 2, 2026 | Oct 2, 2026 | Oct 2, 2026 | Oct 2, 2026 |
| Water Resistance | Waterproof | waterproof | waterproof | |||
| Product Type | smart Watch | smart watch | smart watch | Smartwatch | smartwatch | |
Waterproof Smartwatch with Blood Pressure and Heart Rate Monitoring Blood pressure monitoring
€11.55
When this device makes sense
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