--- product_id: 686186342 title: "HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories." brand: "fittr" price: "$416.86" currency: USD in_stock: true reviews_count: 8 category: "Fittr" url: https://www.desertcart.us/products/686186342-hart-x2-smart-ring-fitness-sleep-and-health-tracker-sterling store_origin: US region: United States of America --- # HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. **Brand:** fittr **Price:** $416.86 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. by fittr - **How much does it cost?** $416.86 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/686186342-hart-x2-smart-ring-fitness-sleep-and-health-tracker-sterling) ## Best For - fittr enthusiasts ## Why This Product - Trusted fittr brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Product Description Fittr Hart Brand Video Hart Ring Product Video Review: Accurate tracking and quality is best - Accurate tracking and fits perfect on my hand. Im impressed the quality and accuracy it provides. Definitely worth the price. Review: FITTR HART truly changed the way I look at my health now 😁 - I have been using the HART ring for few weeks now and I’m honestly loving it. It’s super stylish and doesn’t even feel like a fitness tracker. The accuracy of the sleep with a detailed anlysis and heart rate tracking is impressive, and it really keeps me motivated to stay consistent with my goals. Battery life is solid too. Overall, a great investment for anyone serious about their health. ## Features - Find Your Perfect Fit: Choose the right size with the FITTR HART X2 Smart Ring. Start by purchasing a sizing kit, wear it for 24 hours, and pick your size from 6-13. Available in 3 stylish colours—Gunmetal Black, Sterling Gold, and Silver. Smart ring for men and smart ring for women. - New-Age Charging Case: Charge once, stay powered for up to 20 days. The FITTR HART X2’s charging case can recharge your smart ring up to 5 times, ensuring continuous fitness tracking. - Sleep Score: Track your sleep stages—Deep Sleep, REM, Light Sleep, and Awake. The smart ring provides insights into your total sleep duration, heart rate, and restfulness for improved sleep quality. - Recovery Score: Get personalized recovery insights by tracking HRV, Sleep, and Resting Heart Rate (RHR), helping you optimize rest and improve overall health. - Heart Rate Variability (HRV): Monitor how your body handles stress and recovers with continuous HRV tracking. Understand your body’s resilience for smarter workout and rest decisions. - Stress Monitoring: Track stress levels throughout the day and gain insights into how your body reacts to different situations. Stay calm and balanced with this helpful feature. - Activity Strain & Heart Rate Zones: Monitor activity, calories burned, and heart rate zones (low to max intensity). Tailored algorithms ensure optimal workouts and track your progress towards a healthier lifestyle. ## Images ![HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. - Image 1](https://m.media-amazon.com/images/I/61t4r52dBpL.jpg) ![HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. - Image 2](https://m.media-amazon.com/images/I/813owJlUEVL.jpg) ![HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. - Image 3](https://m.media-amazon.com/images/I/811r0be4AML.jpg) ![HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. - Image 4](https://m.media-amazon.com/images/I/71mXpmSGNjL.jpg) ![HART X2 Smart Ring, Fitness, Sleep & Health Tracker, Sterling Gold, 8 | Buy Sizing Kit First. 8+ days of Battery life. Track sleep, heart rate, HRV, stress, blood oxygen, steps and calories. - Image 5](https://m.media-amazon.com/images/I/818S+WnpipL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Accurate tracking and quality is best *by A***Y on 19 February 2026* Accurate tracking and fits perfect on my hand. Im impressed the quality and accuracy it provides. Definitely worth the price. ### ⭐⭐⭐⭐⭐ FITTR HART truly changed the way I look at my health now 😁 *by P***A on 27 October 2025* I have been using the HART ring for few weeks now and I’m honestly loving it. It’s super stylish and doesn’t even feel like a fitness tracker. The accuracy of the sleep with a detailed anlysis and heart rate tracking is impressive, and it really keeps me motivated to stay consistent with my goals. Battery life is solid too. Overall, a great investment for anyone serious about their health. ### ⭐⭐⭐⭐⭐ I love it! *by J***A on 3 February 2026* I was really looking for a comfortable alternative for my smartwatch because I have noticed the data is not accurate. That's when I checked it am impressed with this ring and it's quality man. The battery also lasts really long. It looks cool as well people have asked what r u wearing what is it. It's a high when I get to explain what it isss. I love this man. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/686186342-hart-x2-smart-ring-fitness-sleep-and-health-tracker-sterling](https://www.desertcart.us/products/686186342-hart-x2-smart-ring-fitness-sleep-and-health-tracker-sterling) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-25*