THE SIGNAL
Why the finger wins.
The arteries sit closer to the surface at the finger than at the wrist, making heart rate, HRV and temperature easier to capture clearly. Aura's sensors read them hundreds of times per night — even when a watch would lose the signal.
THE SCORE
A single number that actually means something.
Raw data is noise. Aura's model combines sleep stages, resting heart rate, HRV and temperature into a single readiness score — validated against clinical polysomnography — so you know exactly how to take on each day.
THE BUILD
Designed to never come off.
Aviation-grade titanium with a hypoallergenic finish, waterproof to 100 m and with a week's battery life. Comfortable enough to sleep in, durable enough to forget about.