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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.

The differences that matter

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.

Oura Ring Gen1

Original sleep and daily-movement 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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SOXAI RING 2 versus Oura Ring Gen1
Smart ringsAdd a model
SOXAI RING 2 - Original physical-device photograph of SOXAI RING 2. SmartWearGuide has not hands-on tested this model. Photo/source credit: 変デジ研究所 / Hendigi.
Smart rings · SOXAISOXAI RING 2Released
Oura Ring Gen1 - Oura Ring Gen1, the large centre device cropped from Alex Fergus’s original Gen1/Gen2 comparison photograph. Other generations removed from this crop. SmartWearGuide has not tested this device. Photo/source credit: Alex Fergus.
Smart rings · OuraOura Ring Gen1Discontinued
Prices · all markets
¥39,980 JPY≈ €226 EUR · $253 USDECB 2026-10-13JP · Listed price · Listed; configured checkout and fulfilment not verified
1 offer records & sources
¥39,980 JPY≈ €226 EUR · $253 USDECB 2026-10-13 JP · Listed price
Listed; configured checkout and fulfilment not verified

SOXAI

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
Price not verified
0 offer records & sources

No verified price in this audit.

Designed forSleep and wellness signals from the finger ↗Original sleep and daily-movement tracking ↗
SensorsDeep Sensing optical HR/red-IR oxygen signals, 3D accelerometer and skin temperature ↗Not verified
Water / dust ratingMaker 100 m-equivalent rating; usage limits apply ↗Not verified
MaterialTitanium Ti-6Al-4V outer shell and resin inner shell ↗Zirconia ceramic (ZrO2) ↗
Weight2.1-2.7 g depending on size ↗Not verified
Form factorSmart ring ↗First-generation smart ring ↗
Dimensions6.7 mm wide × 2.7 mm thick ↗Not applicable to this category
RuntimeUp to 15 days theoretical for sizes 20-26; smaller sizes/use differ ↗Not applicable to this category
Charge Time60-120 minutes ↗Not applicable to this category
ChargingContactless NFC wireless charger; separate USB-C cable not included ↗USB-connected charger with white LED ↗
WirelessBluetooth LE 5.0 ↗Not applicable to this category
FitTen Japanese sizes 8-26; new sizing kit recommended even for existing owners ↗Not applicable to this category
Temperature-5 to 45°C ↗Nighttime skin-temperature sensor ↗
LedsNot applicable to this categoryInfrared LEDs for nighttime biosignals ↗
MotionNot applicable to this category3D accelerometers ↗
Inner SurfaceNot applicable to this categoryNon-metallic, nickel-free moulding ↗
AvailabilityCurrent maker product listing verified. Manufacturer says domestic Japan shipping only; checkout and individual-size fulfilment not tested.Oura says Gen1 purchase, customer support and firmware/software updates are no longer supported.
Important context
  • Wellness signals and app-derived sleep/activity scores are not a medical diagnosis. Fit, firmware and personal physiology affect readings.
  • Runtime is theoretical for large sizes, not a universal 15-day guarantee.
  • SOXAI RING 1/1.1 measurements are not transferred to RING 2.
  • Wellness signals and app-derived sleep/activity scores are not a medical diagnosis. Fit, firmware and personal physiology affect readings.
  • Photo is the large centre Gen1 unit cropped from the original reviewer’s Gen1/Gen2 comparison.
  • Original 2015 campaign and actual later commercial hardware are not described as a current purchase offer.
Editorial pick & releaseNo editorial ranking recordedNo editorial ranking recorded
EvidenceManufacturer source Checked 2026-10-13Manufacturer 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.