Upgrade your everyday essentials with high-tech accessories engineered for every moment — wherever life takes you.

Hart reads your pulse with clarity. Its sensors sit right against your artery, capturing a cleaner signal and truer biometric data.

Feels like nothing, tracks everything. Up to 10X lighter than a typical smartwatch, made to disappear on your finger day and night.

Built tough, worn beautifully. A titanium shell with a sleek, understated design that moves easily from the gym to the boardroom.
Stamina, durability, and expertise you can trust — built into every version of Hart.
Stay focused on your goals, not your charger. Up to 8 days of uninterrupted tracking on a single charge.
Built for 5ATM water resistance, so you can swim, shower, and sweat without ever needing to take it off.
Data you can actually trust — a coach's insight on your finger, backed by a decade of real-world experience.

Sleep, recovery, readiness, and more — all in one app.


From founders and athletes to busy parents and creators.

"I travel almost every week and used to skip tracking entirely. Hart is the first device I've actually worn without thinking about it — sleep data alone has changed my bedtime."

"As a coach I'm obsessed with recovery data. Hart's HRV and readiness scores are close to what my clinical-grade gear shows, minus the bulk on my wrist."

"Between two kids and back-to-back meetings I never remembered to charge a smartwatch. Eight days of battery means I actually have data when I need it."

"I was skeptical about ring trackers after a bad experience with another brand. Hart's step and heart-rate accuracy actually held up against my chest strap."

"It genuinely disappears on your hand. I forget I'm wearing it until the weekly report shows up and tells me I need an earlier bedtime."
Hart uses PPG sensors positioned directly against your artery for a cleaner signal than wrist-based devices. In independent testing it tracks within a close range of clinical-grade equipment for heart rate, HRV, and sleep staging.
No. Every feature — sleep, recovery, stress, VO2 Max, and nutrition insights — is included with your ring at no extra cost, with no recurring fees ever.
Order a free sizing kit at checkout. We'll ship sample rings so you can try them on at home and confirm your exact size before your Hart ring is dispatched.
Yes. Hart is rated 5ATM water resistant, so it's safe to wear while showering, swimming in a pool, or sweating through an intense workout.
Up to 8 days on a single charge with typical 24/7 wear, including sleep tracking. The included wireless charging case makes topping it up quick when you need to.
Yes. The app lets you export weekly reports and trend data as a shareable summary, so your doctor, coach, or trainer can review your progress directly.
Every Hart ring comes with a 1-year India warranty covering manufacturing defects. Reach out to our support team and we'll guide you through a replacement or repair.