Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
B57 Blue, IP67 Smartwatch with Heart Rate Monitor
Available Options
Current
Blue, IP67
Alibaba
€10.36
Available to order
Features
- Compatible with Android
- Bluetooth connectivity
- IP67 water resistance rating
- Heart rate monitor
- Blue color
- Listed for sport use
Product details
General specs
- Model: B57
- Model: B57
- Water Resistance: Waterproof
If you are interested in more details, you can find full information on the seller's page.
€10.36
Last price update: 9/22/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
The B57 is a blue smartwatch/smart bracelet designed for Android compatibility. It connects through Bluetooth and is listed for sport use.
It has an IP67 water-resistance rating and includes a heart rate monitor.
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|
| Brand | Skmei | |||||
| Model | B57 | W30 | CF68 | CF18 | T200 | |
| Color | ||||||
| Rating | ||||||
| Price | €10.36 | €24.41 | €17.38 | €13.87 | €25.45 | €14.74 |
| 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 | smart watch | Smart Watch, Sports Bracelet | Smart Watch, Sports Bracelet | |||
| Health Monitoring | Blood Pressure, Heart Rate | Heart Rate, Blood Pressure | Blood Pressure, Heart Rate | |||
| Waterproof Rating | IP67 | IP67 | IP68 | IP68 | ||
Smartwatch with Heart Rate Monitor Compatible with Android
€10.36
When this device makes sense
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