---
product_id: 658529410
title: "ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker"
brand: "ultrahuman"
price: "¥1093"
currency: JPY
in_stock: false
reviews_count: 13
url: https://www.desertcart.jp/products/658529410-ultrahuman-ring-air-matte-black-size-16-smart-ring-no
store_origin: JP
region: Japan
---

# 6 days battery life Water resistant up to 100m Space-grade titanium build ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker

**Brand:** ultrahuman
**Price:** ¥1093
**Availability:** ❌ Out of Stock

## Summary

> 💍 Elevate your wellness game with the sleekest smart ring on the block!

## Quick Answers

- **What is this?** ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker by ultrahuman
- **How much does it cost?** ¥1093 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/658529410-ultrahuman-ring-air-matte-black-size-16-smart-ring-no)

## Best For

- ultrahuman enthusiasts

## Why This Product

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

## Key Features

- • **Stay Powered Longer:** Up to 6 days of battery life means less charging, more living.
- • **Titanium Tough, Feather Light:** Durable yet ultra-lightweight at just 2.4g for all-day, all-night use.
- • **Effortless 24/7 Health Tracking:** Seamlessly monitor sleep, heart rate & fitness without bulky devices.
- • **Dive Into Data, Not Water Worries:** Water resistant up to 100m, ready for any workout or swim session.
- • **Precision Fit for Ultimate Comfort:** Size-first approach with a dedicated sizing kit ensures perfect wearability.

## Overview

The ULTRAHUMAN Ring AIR is a matte black, space-grade titanium smart ring designed for millennial professionals seeking a minimalist yet powerful health tracker. It offers advanced sleep, heart rate, and fitness monitoring with up to 6 days of battery life and water resistance up to 100 meters. Its unique size-first approach with a dedicated sizing kit ensures a perfect, comfortable fit, making it ideal for continuous 24/7 wear without the bulk of traditional smartwatches.

## Description

Product Description ultrahuman ring AIR

Review: Very comfortable - Starting from sizing the Ring prior to getting the ring delivered and connecting to App, all went smoothly.This sizing kit is very useful and easy to use. It includes multiple plastic ring sizers that cover all common sizes, with clear numbers on each ring for easy identification. The quality is excellent, made from durable and comfortable material.
Review: Excellent Smart Ring for Health Tracking - I have been using the FITTR HART Ring for some time now and have had a very positive experience. The ring is lightweight, comfortable to wear throughout the day, and provides useful insights into key health metrics such as sleep, activity, recovery, heart rate, and overall wellness. What I particularly like is the detailed sleep analysis and readiness score, which help me better understand my daily fitness and recovery levels. The battery life is good, and the companion app is easy to use and presents the data in a simple and meaningful way. The ring has helped me become more aware of my lifestyle habits and make better decisions regarding exercise, sleep, and recovery. Overall, I find the HART Ring to be a valuable health and fitness companion and would recommend it to anyone looking for a convenient wearable for wellness tracking. Highly recommended!

## Features

- SIZE FIRST - Ultrahuman Ring sizes are different from standard ring sizes. Purchase sizing kit first to get the perfect ring AIR size. Ring AIR is available in 10 sizes from 5-14.
- TRYING THE SIZING RING - It is important to first use the sizing kit to determine the ring AIR size. Wear your ring sizer for at least 24 hours to know your fit. Wear the ring such that the engraved size number is toward the palm of your hand.
- FINDING THE CORRECT FINGER - For optimal comfort and advanced sleep tracking, we recommend you wear the Ultrahuman Ring AIR on your index, middle, or ring finger.
- FIT CHECK: You will get highest data accuracy and optimal comfort with a properly fitting Ultrahuman Ring. Here are a few simple ways to assess this — If you rotate the ring on your finger, it should not rotate freely.
- CHOOSE YOUR RING: After you've precisely determined your size using our sizing kit, head over to desertcart to order your Ultrahuman Smart Ring.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7956WT1 |
| Age Range Description | Adult |
| Band Color | Black |
| Band Material Type | Titanium |
| Battery Average Life | 6 Days |
| Battery Capacity | 24 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 2 Hours |
| Best Sellers Rank | #13,437 in Electronics ( See Top 100 in Electronics ) #12 in Rings |
| Box Contents | Charging Dock, Type C to Type C Cable, Ultrahuman Ring AIR |
| Brand Name | ULTRAHUMAN |
| Case Material Type | Titanium |
| Closure Type | Slip-On |
| Colour | Matte Black |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android Devices, iOS Devices |
| Connectivity Technology | Bluetooth |
| Controller Type | Ultrahuman App |
| Customer Reviews | 4.1 out of 5 stars 313 Reviews |
| Display Type | No Display |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Unknown |
| Importer Contact Information | Ultrahuman, Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com |
| Item Type Name | Ultrahuman Ring AIR Sizing Kit |
| Item Weight Unit of Measure | 3.7 Grams |
| Language | German |
| Manufacturer | Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com, Ultrahuman Healthcare Pvt Ltd |
| Manufacturer Contact Information | Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com |
| Memory Storage Capacity | 0.5 MB |
| Metrics Measured | Blood Oxygen (SpO2), Body Temperature, Heart Rate, Sleep Duration, Stress |
| Model Name | Ultrahuman Ring AIR |
| Model Number | UHRA-BRG-05-WBSB |
| Operating System | Ultrahuman App |
| Packer Contact Information | Ultrahuman Healthcare PVT LTD, No. 4088/799, Third Floor, V K Paradise Sector-2HSR Layout, Bangalore Karnataka 560102 India, Contact - 18001028693, cyborg@ultrahuman.com |
| Product Features | Activity Tracker, Lightweight, Multisport Tracker, Sleep Tracker |
| RAM Memory Installed | 0.5 MB |
| Shape | Round |
| Special Feature | Activity Tracker, Lightweight, Multisport Tracker, Sleep Tracker |
| Sport Type | Cycling, Fitness, Multi-Sports, Swimming, Yoga |
| Style Name | Ultrahuman Ring AIR |
| Supported Application | Fitness Tracker, HRV Monitor, Heart Rate Monitor, Multisport Tracker, Sleep Tracker |
| Target Audience | Men, Unisex Adults, Unisex Youth, Women |
| Unit Count | 1 Count |
| Warranty Description | 1 year |
| Warranty Type | Limited |
| Water Resistance Depth | 100 Metres |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IPX8 |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |

## Product Details

- **Battery Capacity:** 24 Milliamp Hours
- **Connectivity Technology:** Bluetooth
- **Memory Storage Capacity:** 0.5 MB
- **Operating System:** android
- **Special Feature:** anti-scratches

## Images

![ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Image 1](https://m.media-amazon.com/images/I/71ldKl2j7DL.jpg)
![ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Image 2](https://m.media-amazon.com/images/I/61IJzdfd7iL.jpg)
![ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Image 3](https://m.media-amazon.com/images/I/719MHkYiOwL.jpg)
![ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Image 4](https://m.media-amazon.com/images/I/61K6MLoIrUL.jpg)
![ULTRAHUMAN Ring AIR - Matte Black- Size 16 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Image 5](https://m.media-amazon.com/images/I/71hr+3zJk7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very comfortable
*by V***K on 22 March 2026*

Starting from sizing the Ring prior to getting the ring delivered and connecting to App, all went smoothly.This sizing kit is very useful and easy to use. It includes multiple plastic ring sizers that cover all common sizes, with clear numbers on each ring for easy identification. The quality is excellent, made from durable and comfortable material.

### ⭐⭐⭐⭐⭐ Excellent Smart Ring for Health Tracking
*by B***O on 24 June 2026*

I have been using the FITTR HART Ring for some time now and have had a very positive experience. The ring is lightweight, comfortable to wear throughout the day, and provides useful insights into key health metrics such as sleep, activity, recovery, heart rate, and overall wellness. What I particularly like is the detailed sleep analysis and readiness score, which help me better understand my daily fitness and recovery levels. The battery life is good, and the companion app is easy to use and presents the data in a simple and meaningful way. The ring has helped me become more aware of my lifestyle habits and make better decisions regarding exercise, sleep, and recovery. Overall, I find the HART Ring to be a valuable health and fitness companion and would recommend it to anyone looking for a convenient wearable for wellness tracking. Highly recommended!

### ⭐⭐⭐⭐⭐ Very nice for sizing
*by A***R on 19 March 2026*

This kit is very helpfull to find corect size before buying smart ring Quality of rings is gud and easy to use also Best thing is you get refund when you buy the ring later totaly worth it for everyone

## Frequently Bought Together

- ULTRAHUMAN Ring Air-Smart Ring Activity Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Sizing Kit, Swatch Sizing Kit), Black
- Ring Sizer Measuring Tool with Magnifying Glass,Reusable Finger Size Gauge Jewelry Sizing Tool 1-17 USA Rings Size 2Pcs

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**Shop now:** [https://www.desertcart.jp/products/658529410-ultrahuman-ring-air-matte-black-size-16-smart-ring-no](https://www.desertcart.jp/products/658529410-ultrahuman-ring-air-matte-black-size-16-smart-ring-no)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-20*