Sleep Wearable Form Factor
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B57 Bluetooth Calling Wrist Smartwatch with Heart Rate Monitor
The B57 is a Bluetooth calling wrist smartwatch with a heart rate monitor, so it offers calling and heart-rate monitoring from the wrist. It is listed as compatible with Huawei, Xiaomi, and Samsung devices.
Features
- Heart rate monitor
- Compatible with Huawei, Xiaomi, and Samsung devices
- Bluetooth calling
General specs
- Model: B57
- Seller: Alibaba
- ID: 62425394878
- Model: B57
- Product Type: smart watch
- Call Function: BT call
- Compatible Brands: huawei, xiaomi, samsung
- 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.
€11.22
Last price update: 9/22/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
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| Brand | Yinsung | IWO | Soulusic | |||
| Model | B57 | W34 | W34 | W34 | W34 | IWO 8 lite, W34 |
| Color | ||||||
| Rating | ||||||
| Price | €11.22 | €8.78 | €11.59 | €15.36 | €15.36 | €11.78 |
| 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 | smart watch, smart bracelet | Smart Watch | Smartwatch | |
Bluetooth Calling Wrist Smartwatch with Heart Rate Monitor Bluetooth calling
€11.22
When this device makes sense
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