---
product_id: 676859007
title: "FITTR HART Sizing Kit I Confirm Size Before You Buy I Choose from 8 Sizes and 3 Colours"
brand: "fittr"
price: "A$10"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/676859007-fittr-hart-sizing-kit-i-confirm-size-before-you-buy
store_origin: AU
region: Australia
---

# Sleep Tracking 8 Sizes 20 Days Charge FITTR HART Sizing Kit I Confirm Size Before You Buy I Choose from 8 Sizes and 3 Colours

**Brand:** fittr
**Price:** A$10
**Availability:** ✅ In Stock

## Summary

> 🔍 Discover Your Perfect Fit with HART!

## Quick Answers

- **What is this?** FITTR HART Sizing Kit I Confirm Size Before You Buy I Choose from 8 Sizes and 3 Colours by fittr
- **How much does it cost?** A$10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/676859007-fittr-hart-sizing-kit-i-confirm-size-before-you-buy)

## 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

- • **Find Your Perfect Fit:** Confirm your size before you buy with our unique sizing kit!
- • **Unmatched Battery Life:** Stay powered for up to 20 days with our innovative charging case.
- • **Empowered Women's Wellness:** Manage your health with exclusive features designed for women.
- • **Comprehensive Sleep Insights:** Track your sleep stages and wake up refreshed every day.
- • **Personalized Recovery Metrics:** Understand your body's recovery needs with tailored insights.

## Overview

The HART Smart Ring Sizing Kit allows you to confirm your ring size before purchasing the HART Ring X2, available in 8 sizes and 3 stylish colors. It features a long-lasting charging case, comprehensive sleep tracking, personalized recovery metrics, and specialized women's health insights, making it an essential tool for health-conscious individuals.

## Description

HART Sizing Kit I Confirm Size Before You Buy I Choose from 8 Sizes and 3 Colours

## 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 |
|---------------|-------|
| OS | OTA |
| Package Dimensions | 13 x 12.8 x 2.9 cm; 0.5 g |
| Batteries | 1 LR44 batteries required. |
| Item model number | FITTR HART Smart Ring X2 |
| Connectivity technologies | Bluetooth |
| GPS | No GPS |
| Special features | Activity Tracker |
| Other display features | Personal Computer |
| Colour | Sizing Kit |
| Whats in the box | 1 Unit Charging Case, 1 Unit Smart Ring, 1 Unit instruction Manual, 1 Unit USB Cable, 1 Unit Ring Silicon Cover |
| Manufacturer | Tomaz International Company Ltd |
| Country of Origin | China |
| Item Weight | 0.5 g |

## Product Details

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

## Images

![FITTR HART Sizing Kit I Confirm Size Before You Buy I Choose from 8 Sizes and 3 Colours - Image 1](https://m.media-amazon.com/images/I/61bG8iOoKdL.jpg)

## Available Options

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

## Frequently Bought Together

- FITTR HART X2 Smart Ring Sizing Kit - Confirm Size Before You Buy - Choose from 8 Sizes
- GABIT Smart Ring Sizing Kit | Size First Before You Buy | Includes 8 Sample Ring Sizes for Men, Women | Tracker for Health, Fitness, Steps, Sleep, Stress, Workouts, Sports, HRV, SPO2, Temp & Nutrition

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-22*