Compare up to 10 devices across categories. Keep the purpose and the source beside the numbers.
676 models available. Showing nine - search to narrow the list.
Lowest recorded store prices take priority over announced or launch prices, within the selected source market. Currencies use the dated EUR reference rates. Deposits and recurring charges are excluded from price order; missing prices stay last. Original price records remain visible.
Budget app-linked sleep and activity tracking
Keep in mind Wellness signals and app-derived sleep/activity scores are not a medical diagnosis. Fit, firmware and personal physiology affect readings.
Sleep, physiological signals and daily activity tracking
Keep in mind Wellness signals and app-derived sleep/activity scores are not a medical diagnosis. Fit, firmware and personal physiology affect readings.
Published specifications and documented constraints. See the full comparison below for prices and sources.
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| Smart ringsAdd a model |  |  |
|---|---|---|
| Prices · all markets | $59.98 USD≈ €54 EURECB 2026-10-13US · Listed price · Displayed listing; merchant authorization, variant stock and checkout unverified 1 offer records & sources$59.98 USD≈ €54 EURECB 2026-10-13 US · Listed price Displayed listing; merchant authorization, variant stock and checkout unverifiedCOLMI.info storefront R02 smart ring displayed standard listing COLMI.info displays $59.98 in US/USD locale. Storefront also carries an Amazon affiliate disclosure; not asserted as an authorized manufacturer store or in-stock checkout offer.Check merchant offer ↗Price source ↗ Checked 2026-10-12 | $299 USD≈ €267 EURECB 2026-10-13US · Historical price · Gen3 no longer available for purchase; original introduction price only 2 offer records & sources$299 USD≈ €267 EURECB 2026-10-13 US · Historical price Gen3 no longer available for purchase; original introduction price onlyOura Original Gen3 Heritage starting finish Original maker introduction states Heritage starts at $299 and Horizon at $349. Style variations are one Gen3 hardware family, not separate devices.Check merchant offer ↗Price source ↗ Checked 2026-10-13$349 USD≈ €312 EURECB 2026-10-13 US · Historical price Gen3 no longer available for purchase; original introduction price onlyOura Original Gen3 Horizon starting finish Original maker introduction states Heritage starts at $299 and Horizon at $349. Style variations are one Gen3 hardware family, not separate devices.Check merchant offer ↗Price source ↗ Checked 2026-10-13 |
| Designed for | Budget app-linked sleep and activity tracking ↗ | Sleep, physiological signals and daily activity tracking ↗ |
| Sensors | Listing names STK8321 motion sensor and Vcare VC30F heart-rate sensor ↗ | Not verified |
| Battery / power | 15 mAh lithium-polymer listing specification ↗ | Not verified |
| Material | Not verified | Titanium with PVD or DLC finish depending on colour ↗ |
| Thickness | 2.7 mm listing specification ↗ | Not verified |
| Form factor | Smart ring ↗ | Smart ring; Heritage/Horizon styling in one hardware family ↗ |
| Wireless | Bluetooth LE 5.0 listing specification ↗ | Not applicable to this category |
| Charging | Magnetic charging cable ↗ | USB-powered charger with colour-coded LEDs ↗ |
| Software | QRing phone app ↗ | Not applicable to this category |
| Compatibility | Listing states Android 5.1+ / iOS 8+ ↗ | Not applicable to this category |
| Leds | Not applicable to this category | Green, red and infrared LEDs ↗ |
| Temperature | Not applicable to this category | Additional NTC temperature sensor compared with Gen2 ↗ |
| Alignment | Not applicable to this category | Additional IR sensor supports alignment compensation ↗ |
| Motion | Not applicable to this category | Accelerometers for activity and movement ↗ |
| Inner Surface | Not applicable to this category | Non-metallic, BPA-free seamless inner moulding ↗ |
| Measurement | Not applicable to this category | Daytime, nighttime and activity heart-rate monitoring ↗ |
| Availability | Named COLMI.info storefront listing and original physical R02 review verified. Maker authorization and exact current hardware revision not independently established. | Oura explicitly says Gen3 rings and chargers are no longer available for purchase. |
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| Editorial pick & release | No editorial ranking recorded | No editorial ranking recorded |
| Evidence | Manufacturer source Checked 2026-10-13 | Manufacturer source Checked 2026-10-13 |
Battery claims use different conditions and are not a controlled benchmark. “Not verified” is an evidence gap, not a missing feature. Prices are dated regional snapshots. Deposits, bundles and historical launch prices are labelled. Brightness measurement methods and battery workloads vary by manufacturer.
