Quick Verdict
The Noise Luna Ring does what it claims at a price that makes smart rings accessible for the first time. At $99 with no subscription, it covers heart rate monitoring, sleep tracking, step counting, SpO2, and stress levels. The data is less accurate and the app less sophisticated than premium competitors — but for $99 with no ongoing costs, the question becomes: why buy a cheap fitness tracker band when you can have a ring?
Pros
- Most affordable smart ring ($99)
- No subscription fee
- 7-day battery life
- Core health metrics covered
- iOS and Android support
- Good starter ring for beginners
- Lightweight (3.5g)
Cons
- No temperature sensor
- Less accurate than premium rings
- Basic app with limited insights
- Only 50m water resistance (ATM5)
- Limited colour options
- Noise is primarily India-market brand
Overview
Noise (Nexxbase Marketing) is one of India's largest consumer electronics brands, known for affordable earbuds and smartwatches. The Luna Ring is their entry into the smart ring category — designed to bring the form factor to price-conscious consumers who find the Oura Ring and Samsung Galaxy Ring's price tags out of reach.
The strategy is clearly working: the Luna Ring has found a strong audience in India, the Middle East, and among budget-conscious Western buyers who are curious about smart rings but unwilling to spend $300–$400 on a first ring. For this audience, the Luna Ring is a genuinely useful product.
Key Specifications
| Price | $99 / ~₹8,999 (no subscription) |
| Subscription | None |
| Battery Life | 7 days |
| Water Resistance | 50m / ATM5 |
| Material | Titanium alloy |
| Weight | 3.5g |
| Sensors | PPG optical, accelerometer, SpO2 |
| Compatibility | iOS and Android (NoiseFit app) |
| Sizes | 7–12 (US sizing) |
| Colours | Midnight Black, Rose Gold |
Health Tracking — What Works, What Doesn't
The Luna Ring accurately tracks steps, active calories, and basic sleep duration (total sleep time, approximate sleep/wake periods). Heart rate monitoring in resting conditions is adequately accurate for most users. SpO2 readings are useful for trend monitoring though not clinical-grade.
What the Luna Ring lacks compared to premium alternatives: skin temperature sensor (no cycle tracking or illness detection), sophisticated sleep staging (no REM/deep/light breakdown — just awake vs asleep), HRV measurement, and the algorithmic insights that turn raw data into actionable health guidance.
For users who just want to know "how many steps did I take" and "how long did I sleep," the Luna Ring delivers. For users who want to understand their physiological recovery, readiness, and sleep cycle quality, step up to the RingConn Gen 3 at minimum.
The Honest Verdict on Budget Smart Rings
There is a significant quality gap between the Luna Ring ($99) and the next tier up (RingConn Gen 3, $149). The extra $50 buys temperature sensing, HRV measurement, sleep staging, and a substantially better algorithm. If your budget allows even slightly, the RingConn Gen 3 is the better buy.
However, the Luna Ring is not a bad product — it's a sensible entry point for curious first-timers who want to try the form factor before committing to a more expensive ring. The 7-day battery is impressive at this price, and no-subscription is the right policy for a budget device.
Who Should Buy the Noise Luna Ring?
Smart ring beginners who want to try the form factor at minimum cost. India and Middle East market buyers where Noise has strong distribution and support. Anyone who thinks they might not stick with smart ring tracking and doesn't want to risk $300+ finding out. If you enjoy the Luna Ring after 3 months, upgrade to RingConn Gen 3 or Ultrahuman Ring AIR.