Your body speaks.
Halo listens 24/7.
The world's thinnest titanium smart ring, packing medical-grade sleep, stress, and heart-rate tracking into an elegant everyday band. Data that whispers, never shouts.
Engineered for the obsessive self.
Discover how continuous optical heart rate, HRV, body temperature, and deep sleep analysis work seamlessly together.
Advanced Sleep Architecture
Tracks REM, deep, and light sleep stages alongside overnight heart rate variability to reveal the true restorative power of your night.
Continuous HRV & Strain
Precise photoplethysmography (PPG) sensors read your pulse 250 times per second, calculating exact physiological load.
Temperature Variance
Detects minute shifts in skin temperature to warn you of oncoming illness or overtraining days in advance.
Aerospace Titanium
Grade 5 titanium shell with seamless diamond-like carbon coating. Scratch resistant and weightless.
Zero Subscription
Full access to all AI health insights, historical trends, and algorithm updates forever. No monthly paywalls.
Deep insights. Zero effort.
Watch how your daily readiness score adapts instantly to your strain, sleep, and recovery balance.
7 days of power.
Waterproof to 100M.
Charge for 20 minutes, live untethered for a week. Aerospace-grade titanium built to endure every swim, lift, and summit without ever slowing you down.
Why choose a ring over a bulky watch?
No distracting screens, zero sleep disruption, and unmatched battery longevity in a form factor you'll forget you're wearing.
| Feature | Halo Ring | Smartwatch | Other Ring Brands |
|---|---|---|---|
| Battery Longevity | 7 Days | 18 - 36 Hours | 4 - 5 Days |
| Sleep Disruption | Zero (Weightless) | High (Bulky & Bright) | Low |
| App Subscription | Lifetime Free | Free | $5.99 / Month |
| Material | Aerospace Titanium | Aluminum / Steel | Standard Titanium |
Trusted by elite athletes and wellness pioneers.
Read how Olympic runners, CEOs, and biohackers use Halo to optimize their daily performance and recovery.
"Halo completely transformed my training recovery. I can pinpoint exact overtraining days before my muscles even feel sore."
"The zero-subscription model sold me instantly. The sleep tracking is more accurate than my previous clinical EEG headband."
"I forget I'm even wearing it. The battery really does last a full week, and the titanium finish looks stunning at board meetings."
Claim your Halo today.
Choose your finish, select your sizing kit shipped free, and unlock lifetime zero-subscription app access.
Stealth Obsidian
Matte black diamond-like carbon coating over aerospace titanium.
- Free Sizing Kit Shipped First
- Lifetime Zero Subscription
- 2-Year Full Hardware Warranty
Brushed Titanium
Raw natural grade 5 titanium with a fine satin hand-brushed finish.
- Free Sizing Kit Shipped First
- Lifetime Zero Subscription
- 2-Year Full Hardware Warranty
18K Rose Gold
PVD 18-karat rose gold vacuum-plated over medical-grade titanium.
- Free Sizing Kit Shipped First
- Lifetime Zero Subscription
- 2-Year Full Hardware Warranty
Have questions about sizing or biometrics?
Our concierge health team is available 24/7 to assist with ring sizing, technical integration, and shipping inquiries.