Arm vs wrist monitors
Compare upper-arm and wrist blood pressure monitors by cuff fit, positioning, display readability, logging, and portability to avoid the wrong home format.
SIKAI B57 Waterproof Sports Smartwatch
Product details
General specs
- Brand: SIKAI
- Model: B57
Starting from €11.60
Last price update: 9/22/26
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| This model | Recommendations | |||||
|---|---|---|---|---|---|---|
SIKAI B57 Waterproof
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Azufit AK15 Compatible with Android and iOS phones
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Azufit R25 Compatible with Android and iOS phones
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Touch Screen Smartwatch Touch screen
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KECHAODA M4 Blood pressure monitoring.
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| Brand | SIKAI | Azufit | Azufit | Microwear | KECHAODA | |
| Model | B57 | AK15 | R25 | M4 | ESEED F17 | |
| Price | €11.60 | €19.46 | €18.30 | €16.96 | €14.99 | €11.87 |
| Seller | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba |
| Update | Oct 11, 2026 | Oct 11, 2026 | Oct 11, 2026 | Oct 11, 2026 | Oct 11, 2026 | Oct 11, 2026 |
| Product Type | Smart watches | Smart Watch | Smart Watch | smart Watch | Smart Watch, Bracelet, Smartwatch, Wristwatch | |
| Heart Rate Monitoring | Heart Rate Monitor | Heart Rate Tracker | Heart Rate Monitor | |||