Noise Luna Ring (Gen1)
Sleep, readiness and activity wellness tracking
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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At a glance
The differences that matter
Oura Ring Gen2
Nighttime biosignals, sleep and daytime motion
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 | Price not verified 0 offer records & sourcesNo verified price in this audit. | Price not verified 0 offer records & sourcesNo verified price in this audit. |
| Designed for | Sleep, readiness and activity wellness tracking ↗ | Nighttime biosignals, sleep and daytime motion ↗ |
| Sensors | Infrared PPG, skin temperature and 3-axis accelerometer ↗ | Not verified |
| Water / dust rating | Maker states up to 50 m equivalent resistance ↗ | Not verified |
| Material | Titanium body, diamond-like coating and hypoallergenic inner shell ↗ | Titanium with PVD or DLC finish depending on colour ↗ |
| Thickness | 3 mm ↗ | Not verified |
| Form factor | First-generation smart ring ↗ | Smart ring; Balance/Heritage styling in one hardware family ↗ |
| Optical Design | Three LEDs, two photodiodes and three alignment bumps ↗ | Not applicable to this category |
| Temperature Sampling | Skin temperature every 5 minutes ↗ | Not applicable to this category |
| Wireless | Bluetooth LE 5 ↗ | Not applicable to this category |
| Runtime | Up to 5 days ↗ | Not applicable to this category |
| Charge Time | Approximately 60 minutes ↗ | Not applicable to this category |
| Fit | Seven ring sizes ↗ | Not applicable to this category |
| Leds | Not applicable to this category | Infrared LEDs for nighttime sensing ↗ |
| Motion | Not applicable to this category | Accelerometers ↗ |
| Temperature | Not applicable to this category | NTC temperature sensors ↗ |
| Charging | Not applicable to this category | USB-powered charger with white LED ↗ |
| Measurement | Not applicable to this category | Nighttime resting HR, HRV, skin temperature and respiratory-rate estimates ↗ |
| Availability | Original maker Gen1 launch and exact-model physical review verified. Gen1 current retail amount and stock not established. | Oura explicitly says Gen2 rings and chargers are no longer available for purchase. |
| Important context |
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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.