---
product_id: 677580620
title: "HART X2 Smart Ring | Unisex Fitness Tracker for Sleep, Recovery, Stress, Workout, Calories & Live HR | 8+ Days Battery | Buy Sizing Kit First | Titanium (Gunmetal Black, 13)"
brand: "fittr"
price: "€ 417.40"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/677580620-hart-x2-smart-ring-unisex-fitness-tracker-for-sleep-recovery
store_origin: GR
region: Greece
---

# Advanced health metrics 8+ days battery life 60 min fast charge HART X2 Smart Ring | Unisex Fitness Tracker for Sleep, Recovery, Stress, Workout, Calories & Live HR | 8+ Days Battery | Buy Sizing Kit First | Titanium (Gunmetal Black, 13)

**Brand:** fittr
**Price:** € 417.40
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your wellness game with the HART X2 — where smart meets sleek.

## Quick Answers

- **What is this?** HART X2 Smart Ring | Unisex Fitness Tracker for Sleep, Recovery, Stress, Workout, Calories & Live HR | 8+ Days Battery | Buy Sizing Kit First | Titanium (Gunmetal Black, 13) by fittr
- **How much does it cost?** € 417.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/677580620-hart-x2-smart-ring-unisex-fitness-tracker-for-sleep-recovery)

## Best For

- fittr enthusiasts

## Why This Product

- Trusted fittr brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Endurance That Matches Your Hustle:** 8+ days of battery life with a charging case that powers up to 5 full charges—stay unplugged longer.
- • **Precision Fit for Ultimate Comfort:** Try the sizing kit first to find your perfect ring size—because one size doesn’t fit all.
- • **Sleep Like a Pro, Recover Like a Champ:** Deep dive into your sleep stages and recovery score to wake up refreshed and ready to conquer.
- • **Stress & Heart Health, Under Your Control:** Real-time HRV and stress monitoring empower smarter decisions for balance and peak performance.
- • **Tailored Wellness Insights for Every Body:** From VO2 max to women’s cycle tracking, get personalized data that keeps you ahead in health and fitness.

## Overview

The FITTR HART X2 Smart Ring is a sleek, unisex fitness tracker crafted from durable titanium, offering 8+ days of battery life and fast 60-minute charging. It delivers comprehensive health insights including sleep stages, recovery score, heart rate variability, stress levels, activity strain, and VO2 max. With a unique sizing kit for a perfect fit and exclusive women’s wellness tracking, it’s designed for professionals who demand precision, style, and actionable data in one compact wearable.

## Description

HART X2 Smart Ring | Unisex Fitness Tracker for Sleep, Recovery, Stress, Workout, Calories & Live HR | 8+ Days Battery | Buy Sizing Kit First | Titanium (Gunmetal Black, 13)

## Features

- [FIND YOUR PERFECT SIZE BEFORE YOU BUY] - FITTR HART X2 Smart Ring sizes are different from other smart ring sizes. First, purchase a ring sizing kit, wear it for 24 hours, and then choose your appropriate size before purchasing the HART Ring X2. Available in 8 sizes from 6-13 and also comes in 3 stylish colours - Gunmetal Black, Sterling Gold, Silver.
- [NEW-AGE CHARGING CASE] - The FITTR Ring X2 comes with a unique charging case that never tires – it’s designed to go on and on, just like you! Charge the case once and it’ll stay powered up for up to 20 days. Recharge your HART Ring X2 up to 5 times.
- [SLEEP SCORE] - Discover unparalleled insights into your sleep with the FITTR HART Ring X2. Sleep tracking breaks down your rest into essential stages—Deep Sleep, REM Sleep, Light Sleep, and Awake—helping you understand how your body functions during sleep. It evaluates your total sleep duration, resting heart rate, and overall restfulness, providing a comprehensive overview of your sleep quality. Plus, it even tracks naps shorter than one hour. Expertly designed to be your ultimate sleep health companion, the HART Ring X2 helps you wake up refreshed and ready to take on the day.
- [RECOVERY SCORE] - Powered by advanced algorithms tailored to each individual, Recovery Score integrates key metrics like Heart Rate Variability (HRV), Sleep, and Resting Heart Rate (RHR) to give you a clear picture of how well your body is recuperating. It offers deep insights into your body’s recovery needs, empowering you to make informed choices that enhance your overall well-being and health.
- [HEART RATE VARIABILITY - HRV] - HRV reflects how well your body handles stress and recovers, offering a clear view of your autonomic nervous system's health. The FITTR HART Ring X2 continuously monitors HRV, giving you personalised data to understand your body’s resilience and readiness for activity. Whether you’re optimising performance or maintaining balance, HRV tracking helps you stay in tune with your body’s needs, ensuring smarter decisions for workouts, rest, and overall well-being.
- [STRESS MONITORING] - Track your stress levels throughout the day and gain insights into how your body responds to various situations. This feature helps you recognize stress patterns and provides the tools you need to maintain balance and calm in your daily life.
- [ACTIVITY STRAIN & HEART RATE ZONES] - Whether it's steps, calories burned, or workouts, the FITTR HART Ring X2 helps you stay active and optimise your cardiovascular health. With heart rate zone monitoring, you'll know exactly where you stand—be it low intensity, warm-up, cardio, intense, or max zone—enabling you to tailor your workouts for maximum effectiveness. Tailored algorithms uniquely adapt to your body, analysing the effort you’ve put in and determining your overall activity strain. Stay motivated, stay on track, and embrace a healthier, more active lifestyle with the FITTR HART Ring X2 — your ultimate fitness companion.
- [VO2 MAX TRACKING] - This key metric measures your body's maximum oxygen uptake during exercise, offering insights into your cardiovascular health and endurance. Whether you're training for peak performance or improving overall fitness, VO2 Max tracking helps you optimise your workouts and achieve your goals faster.
- [WOMENS' WELLNESS (Exclusive for Women)] - Womens’ health needs special attention. Track your menstrual cycle, symptoms, mood, ovulation, and pregnancy with precision. Receive personalised insights, reminders, and expert advice to help you manage every phase of your cycle. Whether you're planning for pregnancy, managing symptoms, or simply staying informed, this feature supports your well-being with the care and attention you deserve. Embrace a holistic approach to your health with tailored guidance and regular updates, ensuring you feel your best every day.
- [CORRELATION GRAPHS & WEEKLY REPORTS] - Gain deeper insights into your health with the FITTR HART Ring X2. Understand how key metrics like sleep, activity, heart rate, and stress interrelate and impact your overall well-being. These visual graphs provide a clear picture of your health trends, while the weekly reports offer a comprehensive summary of your progress, helping you stay informed and make better decisions for your health and fitness journey.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | FITTR |
| Manufacturer | Tomaz International Company Ltd |
| Series | Fittr HART Smart Ring X2 |
| Colour | Gunmetal Black |
| Item Height | 2.9 Centimeters |
| Item Width | 12.8 Centimeters |
| Product Dimensions | 13 x 12.8 x 2.9 cm; 0.5 g |
| Batteries | 1 LR44 batteries required. (included) |
| Item model number | A1-RWXN-UOK2 |
| Wireless Type | Bluetooth |
| Operating System | OTA |
| Battery Charge Time (in hours) | 60 Minutes |
| Average Battery Life (in hours) | 8 Days |
| Are Batteries Included | Yes |
| Lithium Battery Energy Content | 0.07 Watt Hours |
| Number of Lithium Ion Cells | 1 |
| Included Components | 1 Unit Charging Case, 1 Unit Ring Silicon Cover, 1 Unit Smart Ring, 1 Unit USB Cable, 1 Unit instruction Manual |
| Manufacturer | Tomaz International Company Ltd |
| Country of Origin | India |
| Item Weight | 0.5 g |

## Product Details

- **Operating System:** OTA
- **Memory Storage Capacity:** 2 MB
- **Special Feature:** Activity Tracker, Custom Activity Tracking
- **Battery Capacity:** 200 Milliamp Hours
- **Connectivity Technology:** Bluetooth

## Images

![HART X2 Smart Ring | Unisex Fitness Tracker for Sleep, Recovery, Stress, Workout, Calories & Live HR | 8+ Days Battery | Buy Sizing Kit First | Titanium (Gunmetal Black, 13) - Image 1](https://m.media-amazon.com/images/I/51iMzWsqrBL.jpg)

## Available Options

This product comes in different **Colour, Size** options.

## Frequently Bought Together

- FITTR HART X2 Smart Ring | Size First w/Sizing Kit | Sleep, Recovery, Activity & Fitness Tracker | 8-Day Battery, 50m Water Resistance | (Gunmetal Black, 13)
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**Shop now:** [https://www.desertcart.gr/products/677580620-hart-x2-smart-ring-unisex-fitness-tracker-for-sleep-recovery](https://www.desertcart.gr/products/677580620-hart-x2-smart-ring-unisex-fitness-tracker-for-sleep-recovery)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-13*