Analyses effort and activity strain for better fitness planning.
VO2 Max Tracking
Measures maximum oxygen uptake for cardiovascular health and endurance.
Helps optimize workouts and improve fitness.
Women’s Wellness
Tracks menstrual cycle, symptoms, mood, ovulation, and pregnancy.
Provides personalized insights and reminders for better health management.
Correlation Graphs & Weekly Reports
Visualizes sleep, activity, heart rate, and stress trends.
Weekly reports give a summary of progress and health insights.
Features
Real-Time Heart Rate Monitor, Blood Oxygen Level, Body Recovery, Body Temperature, Sleep, Stress, Step Counter, Calories Burnt, Activity Tracking, VO2 Max, Recovery and Strain
Material
Titanium
Battery
Rechargeable 24 mAh non-replaceable LiPo battery
Certifications
5ATM Water Resistant, CE, EU RoHS, FCC, REACH, CP65, BIS
Country of Origin
China
Connectivity
Low powered BLE
WATER RESISTANT
Yes (30 mtr)
Marketed by
FITTR Life Care Private Limited
Sustainable Materials
One Year Warranty
Free Domestic Shipping
Your Hart. Always on, 24/7. One ring for everything you do.
High Precision
HART hears your pulse accurately. Its sensors sit right on your artery, giving a clearer signal and truer biometric data.
Comfort
Feels like nothing but tracks everything. 10X lighter than a typical smartwatch, it's built for 24/7 comfort and disappears on your finger.
Style
HART. Built tough. Worn beautifully. A titanium build with a sleek, stylish design that matches every outfit effortlessly day or night.
Real People, Real Stories
Entrepreneurs, athletes, moms & creators see how HART changed their lives.
Hart Promise
More than a ring..
Stamina, durability, & expertise you can trust.
8 Days
Extended Battery Life
Focus on your goals, not your charger. Get up to 8 days of uninterrupted tracking from a single charge.
5 ATM
Water Resistance
Engineered with 5ATM water resistance, allowing you to swim, shower, and sweat without ever taking it off.
10+ Years
Fittr Expertise
Data you can finally trust. This is a Fittr coach on your finger, backed by 10+ years of real-world expertise.
Stay Tracked
Meet the Ring That’s With You 24/7
Your Health in Numbers
Sleep, recovery, readiness & more in one app.
Meet Your AI Nutritionist
Smarter meals. Real-time guidance. Daily personalization powered by HART.
Accuracy. Backed by Science.
Developed with leading health experts.
Dr. Vid Karmarkar – Public health & diagnostics
Dr. Brandon Roberts – Strength & sports nutrition
Dr. Monika Sharma – Genetics & public health innovation
Dr. Stuart Phillips – Global authority in protein & muscle metabolism
10 Years. 4 Lakh Transformations. One ring.
Backed by Fittr’s decade of coaching and proven results.
For Every Phase of Her Life.
Track your cycle, ovulation, & pregnancy with personalized insights that help you stay in sync with your body.
Fittr Hart X2
Developed by Leading Scientists for Better Sleep, Health, & Recovery. Understand your body better, act on the insights.
What's in the box
Hart Ring X2
+
Wireless Charging Case
+
Type-C Charging Cable
From Entrepreneurs & Athletes to Busy Moms & Creators
There's a HART for everyone
5.00
If you're someone who hates wearing fitness watches to sleep, then you must get HART ring. I've been sleeping better because I can finally wear a tracker while sleeping!
Bandagee Kalra, 31
Entrepreneur, Creator
5.00
The best thing about the ring is that I don't have to remember to charge it. Charge it once and it easily lasts 8-10 days and the metrics are pretty accurate.
Revant Himmatsinghka, 32
Influencer, Change Maker
5.00
If you're someone who hates wearing fitness watches to sleep, then you must get HART ring. I've been sleeping better because I can finally wear a tracker while sleeping!
Bandagee Kalra, 31
Entrepreneur, Creator
5.00
If you're someone who hates wearing fitness watches to sleep, then you must get HART ring. I've been sleeping better because I can finally wear a tracker while sleeping!
Bandagee Kalra, 31
Entrepreneur, Creator
5.00
The best thing about the ring is that I don't have to remember to charge it. Charge it once and it easily lasts 8-10 days and the metrics are pretty accurate.
Revant Himmatsinghka, 32
Influencer, Change Maker
5.00
If you're someone who hates wearing fitness watches to sleep, then you must get HART ring. I've been sleeping better because I can finally wear a tracker while sleeping!
Bandagee Kalra, 31
Entrepreneur, Creator
5.00
I've been using HART ring to track my sleep, steps, my resting heart rate and my HRV. It's helping me to stay on track and improve my health.
Rakesh Roshan, 74
Film producer, Actor, Director
5.00
I love my HART ring, It looks very stylish and is very convenient to wear. I use it all the time! the metrics are very accurate and the battery life is great
Jaime Vandenberg, 28
Miss world Canada, Miss world contestant 2023
5.00
I've been using HART ring to track my sleep, steps, my resting heart rate and my HRV. It's helping me to stay on track and improve my health.
Rakesh Roshan, 74
Film producer, Actor, Director
5.00
I love my HART ring, It looks very stylish and is very convenient to wear. I use it all the time! the metrics are very accurate and the battery life is great
Jaime Vandenberg, 28
Miss world Canada, Miss world contestant 2023
5.00
I've been using HART ring to track my sleep, steps, my resting heart rate and my HRV. It's helping me to stay on track and improve my health.
Rakesh Roshan, 74
Film producer, Actor, Director
5.00
I love my HART ring, It looks very stylish and is very convenient to wear. I use it all the time! the metrics are very accurate and the battery life is great
Jaime Vandenberg, 28
Miss world Canada, Miss world contestant 2023
5.00
Congrats to JC and team for this amazing product, It's quite impressive, the metrics are accurate, the app interface is smooth and is definitely more convenient than a band while sleeping
Nusier Yassin, 33
Entrepreneur, Creator
5.00
I've been using the HART ring to track my activity and recovery primarily. As an athlete, it helps me give very good insights about my RHR and my VO2max which helps me to push myself further
Puja Tomar, 24
UFC fighter
5.00
Congrats to JC and team for this amazing product, It's quite impressive, the metrics are accurate, the app interface is smooth and is definitely more convenient than a band while sleeping
Nusier Yassin, 33
Entrepreneur, Creator
5.00
I've been using the HART ring to track my activity and recovery primarily. As an athlete, it helps me give very good insights about my RHR and my VO2max which helps me to push myself further
Puja Tomar, 24
UFC fighter
5.00
Congrats to JC and team for this amazing product, It's quite impressive, the metrics are accurate, the app interface is smooth and is definitely more convenient than a band while sleeping
Nusier Yassin, 33
Entrepreneur, Creator
5.00
I've been using the HART ring to track my activity and recovery primarily. As an athlete, it helps me give very good insights about my RHR and my VO2max which helps me to push myself further
Puja Tomar, 24
UFC fighter
5.00
If you're someone who hates wearing fitness watches to sleep, then you must get HART ring. I've been sleeping better because I can finally wear a tracker while sleeping!
Bandagee Kalra, 31
Entrepreneur, Creator
5.00
I've been using HART ring to track my sleep, steps, my resting heart rate and my HRV. It's helping me to stay on track and improve my health.
Rakesh Roshan, 74
Film producer, Actor, Director
5.00
Congrats to JC and team for this amazing product, It's quite impressive, the metrics are accurate, the app interface is smooth and is definitely more convenient than a band while sleeping
Nusier Yassin, 33
Entrepreneur, Creator
5.00
The best thing about the ring is that I don't have to remember to charge it. Charge it once and it easily lasts 8-10 days and the metrics are pretty accurate.
Revant Himmatsinghka, 32
Influencer, Change Maker
5.00
I love my HART ring, It looks very stylish and is very convenient to wear. I use it all the time! the metrics are very accurate and the battery life is great
Jaime Vandenberg, 28
Miss world Canada, Miss world contestant 2023
5.00
I've been using the HART ring to track my activity and recovery primarily. As an athlete, it helps me give very good insights about my RHR and my VO2max which helps me to push myself further
Puja Tomar, 24
UFC fighter
5.00
If you're someone who hates wearing fitness watches to sleep, then you must get HART ring. I've been sleeping better because I can finally wear a tracker while sleeping!
Bandagee Kalra, 31
Entrepreneur, Creator
10+ Years of Expertise. 4 Lakh+ Lives Transformed.
Together, HART and Fittr form a complete ecosystem.
Together, they help you improve.