SOXAI RING 2
Sleep and wellness signals from the finger
Keep in mind Wellness signals and app-derived sleep/activity scores are not a medical diagnosis. Fit, firmware and personal physiology affect readings.
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The differences that matter
Oura Ring Gen3
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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| Prices · all markets | ¥39,980 JPY≈ €225 EUR · $252 USDECB 2026-10-12JP · Listed price · Listed; configured checkout and fulfilment not verified 1 offer records & sources¥39,980 JPY≈ €225 EUR · $252 USDECB 2026-10-12 JP · Listed price Listed; configured checkout and fulfilment not verifiedSOXAI SOXAI RING 2 standard ring with charger Maker lists ¥39,980 tax inclusive. Japan domestic shipping only; no international shipping promise. Sizing workflow required.Check merchant offer ↗Price source ↗ Checked 2026-10-13 | $299 USD≈ €267 EURECB 2026-10-12US · Historical price · Gen3 no longer available for purchase; original introduction price only 2 offer records & sources$299 USD≈ €267 EURECB 2026-10-12 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 2026-10-12 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 | Sleep and wellness signals from the finger ↗ | Sleep, physiological signals and daily activity tracking ↗ |
| Sensors | Deep Sensing optical HR/red-IR oxygen signals, 3D accelerometer and skin temperature ↗ | Not verified |
| Water / dust rating | Maker 100 m-equivalent rating; usage limits apply ↗ | Not verified |
| Material | Titanium Ti-6Al-4V outer shell and resin inner shell ↗ | Titanium with PVD or DLC finish depending on colour ↗ |
| Weight | 2.1-2.7 g depending on size ↗ | Not verified |
| Form factor | Smart ring ↗ | Smart ring; Heritage/Horizon styling in one hardware family ↗ |
| Dimensions | 6.7 mm wide × 2.7 mm thick ↗ | Not applicable to this category |
| Runtime | Up to 15 days theoretical for sizes 20-26; smaller sizes/use differ ↗ | Not applicable to this category |
| Charge Time | 60-120 minutes ↗ | Not applicable to this category |
| Charging | Contactless NFC wireless charger; separate USB-C cable not included ↗ | USB-powered charger with colour-coded LEDs ↗ |
| Wireless | Bluetooth LE 5.0 ↗ | Not applicable to this category |
| Fit | Ten Japanese sizes 8-26; new sizing kit recommended even for existing owners ↗ | Not applicable to this category |
| Temperature | -5 to 45°C ↗ | Additional NTC temperature sensor compared with Gen2 ↗ |
| Leds | Not applicable to this category | Green, red and infrared LEDs ↗ |
| 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 | Current maker product listing verified. Manufacturer says domestic Japan shipping only; checkout and individual-size fulfilment not tested. | 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.