Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
K9 Round Screen Smart Watch
Product details
General specs
- Model: K9
Starting from €11.16
Last price update: 9/22/26
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| Model | K9 | SANDA CF18 | CK20S | KW10 | P70/P80 | |
| Price | €11.16 | €14.73 | €18.43 | €15.69 | €22.31 | €19.08 |
| 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 |
| Fitness Tracking | fitness tracker | Fitness Tracker | Fitness Tracker | |||
| Waterproof Rating | IP68 | IP67 | IP67 | IP68 | ||
| Heart Rate Monitoring | heart rate | Heart Rate Monitor | Heart Rate Monitoring | Heart Rate Monitor | ||
| Product Type | Smart Watch | Smart Watch | Fitness Watch, Smartwatch, Smart Wrist Watches | Smart Watch | ||
