The Zenith Series
Titanium Silver · Size US 8
Six layers of miniaturized precision engineering, compressed into a silhouette lighter than a feather. This is how Aura rewrites what a wearable can know about you.
Core Technology
Each sensor is tuned to a different biological signal, working in harmony to build an ever-evolving picture of your inner state.
Our proprietary PPG array uses six high-bandwidth photodiodes and custom infrared emitters embedded beneath synthetic sapphire. The result is a continuous, clinical-grade heart rate and heart rate variability reading — the same metrics used in hospital-grade monitoring.
Accuracy
Sampling Rate
Live HRV Signal
Resting Heart Rate
HRV (RMSSD)
Dual-wavelength red and infrared optics compute your SpO₂ at rest, during activity, and through the night — detecting subtle deviations that pulse oximeters worn on the fingertip often miss entirely.
SpO₂ Reading
Wavelengths
Your blood oxygen is in the optimal range. Average over the last 24 hours: 97.6%
An NTC thermistor bonded to the inner band tracks your peripheral skin temperature every 15 minutes, detecting fever onset, hormonal cycles, and recovery status before you consciously notice a change.
Temperature Trend — 7 Days
Fusion of accelerometer, HRV, and skin temperature data lets Aura map your full sleep architecture — REM, light, and deep sleep cycles — with accuracy rivaling polysomnography.
Last Night
7h 42mA gyroscope and three-axis accelerometer fused in our proprietary Neural Motion Core detects over 40 distinct movement types — from finger-tapping to swimming strokes — autonomously and without manual activity logging.
Activity Today
324
kcal
5.1
km
38
min active
Biometric Sensors
Battery Life
Water Resistant
Net Weight
Materials
Bonded on an atomic level via 12-stage vapor deposition for a finish that outlasts everything.
Custom silicon for ultra-low-power synthesis.
Sensor windows precision-cut from synthetic sapphire — 9H hardness, optical clarity.
Real-time RTOS running at 32 MHz with adaptive sensor scheduling.
Encrypted sync to iOS & Android with 50m open-air range.
Your biometric data never leaves your device unencrypted.
How it Works
Six photodiode emitters pulse infrared and red light into your finger tissue 250 times per second.
Reflected light is captured and the absorption delta reveals blood volume, oxygen saturation, and movement artefacts.
Raw signals are filtered and fused with motion and temperature data on-device by the Neural Biometric Core.
Meaningful health narratives surface in the Aura app — not raw numbers, but living context about your body.
Worn by the Few
"Aura caught my elevated resting heart rate three days before I developed a fever. It's not a gadget — it's a guardian."
Sofia M.
Physician, Barcelona
"The sleep architecture data completely changed how I structure my training blocks. I recovered 40% faster within six weeks."
James K.
Pro Cyclist, Team Ineos
"It weighs nothing but carries everything. I wear it 24/7 and forget it's there — until it surfaces something remarkable."
Ariana L.
Founder, Meridian Bio
The Zenith Ring is now accepting early access reservations. Join the first generation of users to listen deeper.
Ships Q3 2025 · Free returns · 2-year warranty