Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
B57 Fitness Tracker Waterproof Smartwatch with Heart Rate Monitor and Fitness Tracker
Available offers (5)
Current
Fitness Tracker
Alibaba
RUB 930.81
Available to order
Features
- Waterproof
- Heart rate monitor
- Fitness tracker
- Bluetooth connectivity
- Suitable for women and men
General specs
- Model: B57
- Seller: Alibaba
- ID: 62397775459
- Model: B57
- Connectivity: Bluetooth
- Product Type: Smart Watch
- Intended Users: Women, Men
- Fitness Tracking: Fitness Tracker
- Water Resistance: Waterproof
- Heart Rate Monitoring: Heart Rate Monitor
- First listed by seller: September 22, 2026
If you are interested in more details, you can find full information on the seller's page.
RUB 930.81
Last price update: 9/22/26
Available to order
Shipping options
Delivery to 
Russia
Russia
Available
Model B57 is a smartwatch with Bluetooth connectivity, a heart rate monitor, and fitness-tracking features. It is listed as waterproof and suitable for women and men.
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| Model | B57 | ID205 | LEMT | Xiaomi Haylou LS01 | ESEED F17 | KW19 |
| Price | RUB 930.81 | RUB 1,636.94 | RUB 10,551.85 | RUB 1,275.05 | RUB 1,067.22 | RUB 914.76 |
| Seller | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba |
| Update | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 |
| Product Type | Smart Watch | smart watch | Smart Watch | Smart Watch, Bracelet, Smartwatch, Wristwatch | Smartwatch | |
| Water Resistance | Waterproof | waterproof | Waterproof | waterproof | ||
Waterproof Smartwatch with Heart Rate Monitor and Fitness Tracker Waterproof
RUB 930.81
When this device makes sense
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