Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
If you are interested in more details, you can find full information on the seller's page.
Model W4 is a smart watch / smart bracelet listed with waterproof construction and Bluetooth connectivity.
Suitable for men and women.
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Fitness tracker Water resistance: Waterproof
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| Model | W4 | Z02 | B57 | W68 | Wearfit 2.0 | |
| Price | €9.91 | €12.61 | €17.12 | €10.46 | €17.58 | €11.99 |
| Seller | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba |
| Update | Nov 12, 2026 | Nov 12, 2026 | Nov 12, 2026 | Nov 12, 2026 | Nov 12, 2026 | Nov 12, 2026 |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | |||
| Product Type | Smart Watch, Smart Bracelet | Smart Watch, Smart Bracelet | Fitness Tracker, Activity Tracker Watch, Sports Smart Bracelet | Smart Watch | Smartwatch, Smart Wristband Watch | Fitness Tracker, Smart Bracelet, Smart Watch |
| Water Resistance | Waterproof | Waterproof | Waterproof | Waterproof | Waterproof | |
| Heart Rate Monitoring | Heart Rate Monitor | Heart Rate | Heart Rate | |||
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