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.
The OD2 is a smartwatch with ECG and blood oxygen monitoring, NFC, GPS, and a compass. It has an IP68 water resistance rating and is compatible with Android and iOS.
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Smartwatch The supplier states an IP67 waterproof rating.
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Heart Rate Monitoring Smart Watch Heart rate monitoring
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| Model | OD2 | L9 | DT78 | KW10 | Y7 | ESEED F17 |
| Price | €56.25 | €32.05 | €15.62 | €25.00 | €13.21 | €11.87 |
| Seller | Newegg | Alibaba | Alibaba | Alibaba | Alibaba | Alibaba |
| Update | Oct 8, 2026 | Oct 8, 2026 | Oct 8, 2026 | Oct 8, 2026 | Oct 8, 2026 | Oct 8, 2026 |
| Product Type | Smartwatch | smartwatch | Smart Watch, Bracelet, Smartwatch, Wristwatch | |||
| Compatible Operating Systems | IOS, Android | Android, IOS | Android, IOS | IOS, Android | ||
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