Luna, a new-age health-tech company approaching the core problem of unlocking human potential differently, today announces two major advancements to the Luna Gen 2 Smart Ring: on-demand biomarker measurement and the Timeline feature, marking a significant leap in personal health technology. The Luna Ring Gen 2, available globally from Luna for $329 including tax / £299 including tax / €329 including tax with the Surge Charger included, now empowers users to take control of wellbeing through real-time insights and contextual understanding of a user’s daily lives.
On-demand Biomarker Measurement: Unlike most smart rings that only track passively, the Luna Ring Gen 2 lets users instantly measure key biomarkers, including SpO₂, skin temperature, heart rate, and stress anytime. It bridges the gap between continuous monitoring and real-time health awareness, providing immediate, actionable insights.
The Timeline: The second major update introduces the Timeline, a feature that transforms how people understand health by bringing life’s context into the same space as the body’s biometrics. Beyond sleep, steps, and heart rate tracking, the Timeline captures the moments between the data such as eating, recovery, and environmental factors to reveal how daily choices influence readiness, energy, and overall vitality. With this update the Timeline evolves from a simple record of activities into a living map of life’s inputs and outcomes.
Key Highlights:
- Richer, contextual logging: Record detailed meal intake, sexual activity, supplement use, alcohol consumption, and recovery rituals (ice baths, saunas, meditation) to bring context to every data point.
- AI-powered meal understanding: Describe a meal in plain language and Luna’s AI instantly decodes food items, calories, and macronutrients turning ordinary logs into precise nutrition insights.
- Sleep environment intelligence: Capture factors like CPAP use, dim lighting, or mouth taping to uncover how sleep settings affect recovery and next-day performance.
- Flexible, user-driven control: Edit or delete entries seamlessly for today or previous days, ensuring the record evolves with the user’s routine.
- Deep LifeOS integration: Revisiting any activity now unlocks “Learn more with LifeOS,” connecting everyday patterns with Luna’s adaptive intelligence for truly personalized optimization.
The Luna Ring Gen 2 combines design, intelligence, and performance. Powered by LifeOS, an adaptive AI trained on over a billion sleep events, it translates biometrics into real-time guidance for better health and performance. The ring delivers AI-driven sleep, readiness, and activity insights, advanced stress and recovery tracking, and deep circadian-aligned analytics, all supported by a 21+ day battery life and redesigned Surge Charger.
Ring Specifications
| Weight & Dimensions | W&DW: 8 MMThickness: 2.9mm Weight: 3 to 5 G (depending on the ring size) |
| Material | Durable Titanium PVD Coating Non-allergenic, non-metallic, seamless inner ring moulding 5 ATM water-resistant (up to 50m/164 ft) |
| Battery & Power | Up to 5 days of battery lifeFull Charge in 60 to 80 |
| Connectivity | Bluetooth low-energy (BLE 5)Automatic Firmware update via the Luna Ring AppCompatible with iOS 14 or later and Android 6 onwards |
| Sensors | Green LEDs (optical heart rate sensor) Red Light (blood oxygen sensor)Photoplethysmography (PPG sensor)Skin Temperature Senor Photodiodes 3-axis accelerometer |
Charger Specifications
| Weight & Dimensions | Width: 37.8mmThickness: 37.8mmWeight: 25.9 grams |
| Materials | Acrylic +ABS+ aluminum alloy |
Luna Ring vs Ultrahuman Ring Air vs Oura Ring
| Luna Ring | Ultrahuman Ring Air | Oura Ring | |
| Cost | £299 | £329 | £499 |
| Monthly Subscription Fee | Free | Paywall restricted features | Paid |
| Battery Life | 4-7 days | 4-7 days | 4-7 days |
| Battery Case | Yes (up to 30 days) | ✖️ | ✖️ |
| Charging Time | 120 minutes | 120 minutes | 120 minutes |
| Sleep Tracking | ✔️ | ✔️ | ✔️ |
| SpO2 Monitor | ✔️ | ✔️ | ✔️ |
| Heart Rate and HRV | ✔️ | ✔️ | ✔️ |
| Fertility Tracking | ✔️ | Mid-level | ✔️ |
| Hydration & Sleep Reminder | ✔️ | ✖️ | ✖️ |
| Caffeine Window | ✔️ | ✔️ | ✖️ |
| Stress Monitoring | ✔️ | ✔️ | ✔️ |
| Auto Detection – Walking & Running | ✔️ | ✔️ | ✔️ |
| Real Time Chat Support | ✔️ | ✔️ | ✖️ |
| AI Coach | ✔️ | ✖️ | Upcoming |
| Voice AI/ Health Coach | ✔️ | ✖️ | ✖️ |
| Workout & Nutrition Plan | ✔️ | ✖️ | ✖️ |
| Weight | 3.5g (varies by size) | 2.5g (varies by size) | 3.5g (varies by size) |
| Compatibility | iOS & Android | iOS & Android | iOS & Android |
| Water Resistance | ✔️ | ✔️ | ✔️ |
Affiliate and Additional Resources:
- Luna’s affiliate program can be accessed here, offering readers a 10% discount and affiliates a 15% commission on qualifying sales.
About Luna:
Luna is a health-tech company reimagining personal health through an integrated ecosystem of hardware, software, and intelligence. At its core is LifeOS, Luna’s adaptive health operating system that interprets biometric data from the Luna Ring and other future devices to deliver real-time guidance on energy, circadian rhythm, and recovery. With science-first design and a global user base, Luna aims to make precision health both accessible and aspirational.