Ultrahuman Ring AIR 2.4g Fighter-Jet Titanium Metabolic & Circadian AI Smart Ring
2.4-gram, 2.4mm fighter-jet Grade titanium smart ring reinforced with Tungsten Carbide Carbon coating, combining dual-wavelength PPG, medical-grade skin temperature, and 6-axis motion sensors with Ultrahuman Jade real-time bio-AI, modular PowerPlugs (Circadian Alignment, Caffeine Window, AFib), and $0/month core subscription.
Editorial Rating Methodology (★ 4.8 / 5.0): This score is an internal editorial evaluation compiled by the RECIWO Labs editorial team—not a user poll or crowd-voted rating. It assesses published silicon compute efficiency (25%), optical/sensor/actuator engineering (25%), battery & thermal envelope (20%), SDK/software openness (15%), and price-to-specification value (15%) based on official manufacturer datasheets and public technical documentation. Learn more about our evaluation rubric →
Key Engineering Highlights
- Crafted from fighter-jet titanium with a Tungsten Carbide Carbon outer coating and a bump-free medical-grade epoxy inner lining—weighing just 2.4 grams at 2.4mm thickness
- Runs Ultrahuman Jade real-time bio-AI and the modular PowerPlugs store, translating skin temperature minima, HRV, and sleep architecture into actionable Circadian Phase Alignment and Caffeine Stimulant Windows
- Integrates natively with Ultrahuman M1 continuous glucose monitors (CGM) to correlate nocturnal glucose spikes with HRV recovery drops, with $0/month mandatory subscription fees
Full Hardware Specifications
| Processor / Edge SoC | Ultra-Low-Power Bluetooth LE Bio-Sensing SoC + High-Precision Optical & Thermal Analog Front-End (AFE) |
|---|---|
| AI Model Stack | Ultrahuman Jade Real-Time Bio-Intelligence + Modular PowerPlugs Ecosystem (Circadian, Caffeine, AFib & Glucose Sync) |
| Display & Optics | Screenless 2.4mm Finger Ring (Flat Outer Facet for Sleep Orientation + Hypoallergenic Epoxy Inner Lining) |
| Camera & Vision | None (100-Meter / 330ft Waterproof Fighter-Jet Titanium Shell w/ Tungsten Carbide Carbon Scratch Shield) |
| Measured Weight | 2.4g – 3.6g Depending on Ring Size (8.1mm Width × 2.4mm–2.8mm Ultra-Smooth Inner Profile Without Bumps) |
| Battery & Runtime | Up to 6 Days Continuous 24/7 Biometric & Temperature Tracking (80-Min Wireless Charging Dock) |
| Connectivity & I/O | Bluetooth Low Energy (BLE 5.0+) w/ Low-EMF Airplane Mode & Bidirectional Ultrahuman M1 CGM Glucose Sync |
| Sensors & Acoustics | Infrared & Red/Green PPG Sensor (HR, HRV, SpO2) + Medical-Grade Non-Contact Temperature Sensor + 6-Axis Motion IMU |
⚖️ Side-by-Side Comparison: Ultrahuman Ring AIR 2.4g Fighter-Jet Titanium Metabolic & Circadian AI Smart Ring vs. AI Wearables & Audio Peers
Direct specification comparison against leading competing devices in the AI Wearables & Audio category.
| Specification | Ultrahuman Ring AIR 2.4g Fighter-Jet Titanium Metabolic & Circadian AI Smart Ring (Current) | PLAUD NotePin Pro Magnetic AI Memory Capsule → | Limitless Pendant 2 All-Day AI Clasp → | Omi DevKit 2 (Open-Source nRF5340 AI Necklace) → |
|---|---|---|---|---|
| Brand | Ultrahuman | PLAUD.AI | Limitless | Based Hardware |
| Retail Price | $349 | $179 | $129 | $89 |
| Editorial Rating | ||||
| Edge SoC | Ultra-Low-Power Bluetooth LE Bio-Sensing SoC + High-Precision Optical & Thermal Analog Front-End (AFE) | Custom Dual-Core Noise-Canceling DSP + BLE 6.0 SoC | ARM Cortex-M55 + Ethos-U55 microNPU | Nordic nRF5340 Dual Arm Cortex-M33 |
| AI Model Stack | Ultrahuman Jade Real-Time Bio-Intelligence + Modular PowerPlugs Ecosystem (Circadian, Caffeine, AFib & Glucose Sync) | Whisper-Large-v3 + Claude 4 / GPT-4o | Limitless Cloud Memory Engine | Custom Webhook / Local Whisper + Llama |
| Display / Optics | Screenless 2.4mm Finger Ring (Flat Outer Facet for Sleep Orientation + Hypoallergenic Epoxy Inner Lining) | Micro-perforated status LED + Linear haptic motor | Privacy Recording Status LED | Screenless + Programmable RGB Ring |
| Camera | None (100-Meter / 330ft Waterproof Fighter-Jet Titanium Shell w/ Tungsten Carbide Carbon Scratch Shield) | None | None | Optional OpenMV Camera Hat |
| Weight | 2.4g – 3.6g Depending on Ring Size (8.1mm Width × 2.4mm–2.8mm Ultra-Smooth Inner Profile Without Bumps) | 22.0g | 17.5g | 14.5g |
| Battery | Up to 6 Days Continuous 24/7 Biometric & Temperature Tracking (80-Min Wireless Charging Dock) | 24h continuous recording / 45-day standby | 100 hours active recording | 32h Continuous Opus Streaming |
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