Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Emerhome R11 Ultra-Thin Smart Ring
Product details
General specs
- Brand: Emerhome
- Model: R11
Starting from €26.77
Last price update: 3/22/26
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| Brand | Emerhome | Mirlray | Kuinha | Oura | RingConn | RingConn |
| Model | R11 | R02 | AIR-Smart Ring | JZ90-54144-11 | RCA-02 | RCA-02 |
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| Price | €26.77 | €19.63 | €8.92 | €311.48 | €177.61 | €177.61 |
| Seller | Retailer | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Mar 22, 2026 | Jun 19, 2026 | Dec 6, 2025 | Mar 21, 2026 | Jun 24, 2026 | Mar 30, 2026 |
| Size | 7 | 11 | 12 (US ring size) | 12 | ||
| Battery Life | 5 days | 7-9 days | 5 to 8 days | 10 days | 10 days | |
| Compatibility | Mobile App | Android, iOS | iOS, Android | |||
| Number of Items | 1 | 1 | 1 | |||
| Waterproof Rating | 10ATM | IP68 (tested to 328 ft / 100 m) | IP68 (100m / 328ft) | |||
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