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SIKAI B57 B57 Waterproof Sports Smartwatch
Features
- Waterproof
- Heart rate monitor
- Blood pressure monitoring function
- Compatible with iPhone phones
- Suitable for women and men
General specs
- Brand: SIKAI
- Model: B57
- Seller: Alibaba
- ID: 62400235391
- Brand: SIKAI
- Model: B57
- Waterproof: Waterproof
- Product Type: Smart watches
- Intended Users: Women, men
- Compatible Phone: iphone phone
- Heart Rate Monitoring: Heart Rate Monitor
- Blood Pressure Function: Blood Pressure Functions
- First listed by seller: September 22, 2026
If you are interested in more details, you can find full information on the seller's page.
€11.60
Last price update: 9/22/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
SIKAI B57 is a sports smartwatch described as waterproof and compatible with iPhone phones. It includes heart rate monitoring and a blood pressure monitoring function. The listing states it is suitable for women and men.
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|---|---|---|---|---|---|---|
SIKAI B57 Waterproof
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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 | |||
SIKAI B57 Waterproof
€11.60
When this device makes sense
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