A slim nighttime band that reads your eyes, monitors your heart, and wakes you like an ocean wave. OceaNova detects REM eye movement and heart rhythm anomalies while you sleep — alerting gently through escalating vibration and calming sounds, never a sudden alarm. Set your own min/max BPM. Sleep safe. Wake gentle.
Traditional health alerts are binary — silence, then panic. OceaNova introduces a physiologically-informed escalation that rises like a symphony, from pianissimo to fortissimo, giving your autonomic nervous system time to prepare rather than startle. During sleep, it reads your eye movements to know your REM state and adjusts the crescendo accordingly.
OceaNova's core technology detects rapid eye movement through ocular micro-motion sensing — tracking the precise moment you enter REM sleep, when your heart is most vulnerable to nocturnal arrhythmias.
During REM sleep, the eyes move rapidly beneath closed lids — 20 to 60 saccades per minute. OceaNova's accelerometer-based ocular micro-motion detection identifies these movements through subtle cranial vibrations transmitted to the wrist, correlating them with PPG waveform changes to achieve 79% sleep stage classification accuracy against polysomnography.
This matters because nocturnal cardiac events cluster disproportionately during REM phases. Atrial fibrillation episodes, prolonged QT intervals, and sudden bradycardia are 2-3x more likely during REM. By knowing when you enter REM, OceaNova heightens cardiac vigilance during the exact windows of maximum vulnerability.
The Crescendo Alert adapts — during REM, the whisper phase extends longer to avoid jolting you from a vulnerable cardiac rhythm. The ocean wave knows when to be gentle.
During REM sleep, nightmares cause acute sympathetic activation — sudden heart rate spikes of 30–50 BPM. The band's eye-reading technology identifies the REM phase, while the PPG sensor catches the cardiac anomaly in real time.
Nightmares are not just psychological — they are measurable cardiac events. During REM sleep, vivid dreams and night terrors trigger the sympathetic nervous system, causing acute heart rate spikes or dangerous drops.
OceaNova's dual-wavelength PPG sensor continuously monitors your HRV and detects autonomic dysregulation patterns — while the eye-reading engine confirms you're in REM, providing context for smarter, more accurate alerts.
When a patient with cardiac vulnerability is startled by an abrupt alarm, the adrenal medulla releases a surge of catecholamines — epinephrine and norepinephrine. This acute sympathetic activation increases heart rate, raises blood pressure, and can trigger vasoconstriction.
In patients with existing arrhythmias, this catecholamine surge can precipitate ventricular tachycardia, prolong QT intervals, or worsen atrial fibrillation. The very alarm designed to help becomes a physiological accelerant.
OceaNova's Crescendo Alert begins with a barely perceptible haptic pulse — a single gentle vibration every 4 seconds. Over 30-90 seconds, the interval shortens and amplitude increases, mirroring the natural crescendo of ocean waves approaching shore.
Because the band reads your eye movement, it knows whether you're in REM — and extends the whisper phase during vulnerable sleep states. Your parasympathetic nervous system maintains dominance during the transition from sleep to awareness.
A single, barely-there haptic pulse every 4 seconds. Detectable only if you're still — designed to enter awareness gently during sleep. Extended during REM based on eye-movement data.
Interval halves to 2 seconds. Amplitude doubles. A rhythmic pattern emerges — two short pulses — creating the sensation of a heartbeat on your wrist.
Continuous rhythmic escalation. Vibration becomes unmistakable, accompanied by a tonal alert rising in pitch — ocean sounds building from calm to cresting wave.
Full haptic and audio engagement. Companion app activates. Emergency contacts notified. GPS location shared. Every system at full alert — but your body had 90 seconds to prepare.
After detecting a REM cardiac event, OceaNova wakes you with scientifically-curated soundscapes that activate your parasympathetic nervous system — lowering cortisol, restoring HRV, and guiding you back to restful sleep.
Gentle rolling waves
Delicate melodies
Soft rain on water
Wind chimes by sea
No clock. No screen glare. Just a slim band with eye-reading technology, heart rhythm sensors, and the Crescendo engine. 28 grams you forget you're wearing — until it matters.
Ultra-slim 28g band designed for nighttime comfort. The PPG sensor and eye-reading accelerometer auto-calibrate to your wrist in 30 seconds. No screen glare. No distractions.
Open the app. Set your minimum and maximum heart rate thresholds. Choose your preferred wake-up sound. OceaNova monitors every beat and reads your eye movements all night.
Heart rate outside your range? The band knows if you're in REM from your eye movements. Crescendo begins at a whisper — gentle vibration rising like an ocean wave, then calming sounds that ease you to awareness without triggering the very crisis it detected.
$129. No subscription. No hidden fees.
Available in Midnight Black, Ocean Navy, and Deep Blush.