---
product_id: 609466441
title: "– ULTRAHUMAN Ring AIR - Aster Black - Size 5 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker"
brand: "ultrahuman"
price: "4239 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Ultrahuman"
url: https://www.desertcart.ro/products/609466441-ultrahuman-ring-air-aster-black-size-5-smart-ring-no
store_origin: RO
region: Romania
---

# 10 sizes for perfect fit Advanced multi-stage sleep tracking Comprehensive heart & biomarker monitoring – ULTRAHUMAN Ring AIR - Aster Black - Size 5 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker

**Brand:** ultrahuman
**Price:** 4239 Lei
**Availability:** ✅ In Stock

## Summary

> 💍 Unlock your health potential with the smartest ring on your finger!

## Quick Answers

- **What is this?** – ULTRAHUMAN Ring AIR - Aster Black - Size 5 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker by ultrahuman
- **How much does it cost?** 4239 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/609466441-ultrahuman-ring-air-aster-black-size-5-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

- • **Sleep Like a Pro:** Track REM, Deep, Light sleep & wakefulness with actionable insights to wake up refreshed every day.
- • **Sleek, Smart & Social:** A stylish black smart ring that’s as functional as it is a conversation starter—wear your wellness with pride.
- • **Precision Fit, Zero Hassle:** Sizing kit ensures your Ultrahuman Ring AIR fits like a glove—no returns, no compromises.
- • **Women’s Health, Elevated:** Cycle, ovulation & pregnancy tracking with personalized biomarker insights tailored for every phase.
- • **All-in-One Health Dashboard:** Monitor heart rate, stress, activity, and recovery seamlessly—no monthly subscription needed.

## Overview

The ULTRAHUMAN Ring AIR in Aster Black is a cutting-edge smart ring designed for comprehensive health tracking without monthly fees. Available in 10 precise sizes via a sizing kit, it offers advanced sleep stage analysis, heart rate and stress monitoring, and specialized women’s health insights including ovulation and pregnancy tracking. Lightweight and stylish, it integrates seamlessly with the Ultrahuman app to empower your wellness journey with real-time, actionable data.

## Description

ULTRAHUMAN Ring AIR - Aster Black - Size 5 - Smart Ring | No Monthly Subscription | Size First with Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker : desertcart.co.uk: Sports & Outdoors

Review: best smart ring on the market! - best investment of 2025! looks and feels amazing on, very functional - you can track so much on it in real time. especially good if you struggle with sleep as it gives you detailed insights. i managed to get it on a black friday deal (£232) so the value for money was amazing! only con of this ring is that it does scratch easily but this can be mitigated by getting a cover for it.
Review: Great product. - I am happy with the functionality of this ring. The stats mirror fairly closely to my Apple Watch in terms of sleep. Steps are not at all accurate though. The app provides lots of information, which I love, although it could be overwhelming for some. That said, it breaks it down well and gives some well presented information The ring is well made and solid, and looks good. So far I am very happy with the product.

## Features

- BUY THE SIZING KIT FIRST: Ultrahuman Ring sizes differ from standard ring sizes. Purchase the Ultrahuman Sizing Kit first, which includes a ring sizer, to accurately determine your size. The Ring AIR is available in 10 sizes (5-14), ensuring a comfortable, secure fit. Using the sizing kit helps you avoid returns and exchanges, ensuring you select the right size before purchasing.
- COMPREHENSIVE HEALTH TRACKING: The Ultrahuman Ring measures a wide range of metrics including sleep, activity, stress, heart health, movement, workouts, and recovery. Stay on top of your health and fitness goals with detailed insights to optimize your performance and well-being.
- WOMEN’S HEALTH INSIGHTS: With Ultrahuman Ring's advanced women's health features, track ovulation, cycles and pregnancy. Through multi-biomarker-based tracking for those looking to conceive, predict a 7-day fertile window and pinpoint ovulation with precision. Access cycle tracking combined with biomarker-based personalized guidance for every phase (Menstruation, Ovulation, Follicular, and Luteal). With Pregnancy Mode, expecting mothers get tailored pregnancy insights throughout each trimester.
- ONE APP, NO SUBSCRIPTION: Enjoy all the essential standard features of the Ultrahuman Ring, including sleep, activity, stress, heart rate, heart rate variability, skin temperature and recovery with no subscription — on the Ultrahuman App.
- ADVANCED SLEEP TRACKING: Ultrahuman Ring provides detailed insights into all your sleep stages — REM, Deep Sleep, Light Sleep and Wakefulness, along with actionable steps and nudges to improve sleep so you're ready for the day. It also tracks sleep debt, helping you understand your overall sleep quality and identify areas for improvement. Optimize your rest and recovery with accurate, personalized sleep insights.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CLB6K74J |
| Best Sellers Rank | 4,544 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 19 in Wearable Tech Rings 136,856 in Women's Jewellery |
| Department | Unisex |
| Guaranteed software updates until | unknown |
| Item model number | UHRA-AA-05 |
| Language | Italian |
| Manufacturer | Ultrahuman Healthcare Pvt Ltd |
| Product Dimensions | 7.5 x 14 x 18 cm; 2.4 g |

## Product Details

- **Battery capacity:** 24
- **Battery cell composition:** Lithium Polymer
- **Brand:** ULTRAHUMAN
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Memory storage capacity:** 0.5 MB
- **Operating system:** Ultrahuman App
- **Shape:** Round
- **Special feature:** Activity Tracker, Custom Activity Tracker, Heart Rate Monitor, Multisport Tracker, Sleep Monitor
- **Wireless communication standard:** Bluetooth

## Images

![– ULTRAHUMAN Ring AIR - Aster Black - Size 5 - 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/71Nk9O+MkfL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ best smart ring on the market!
*by D***G on 6 December 2025*

best investment of 2025! looks and feels amazing on, very functional - you can track so much on it in real time. especially good if you struggle with sleep as it gives you detailed insights. i managed to get it on a black friday deal (£232) so the value for money was amazing! only con of this ring is that it does scratch easily but this can be mitigated by getting a cover for it.

### ⭐⭐⭐⭐⭐ Great product.
*by R***Y on 7 January 2026*

I am happy with the functionality of this ring. The stats mirror fairly closely to my Apple Watch in terms of sleep. Steps are not at all accurate though. The app provides lots of information, which I love, although it could be overwhelming for some. That said, it breaks it down well and gives some well presented information The ring is well made and solid, and looks good. So far I am very happy with the product.

### ⭐⭐⭐⭐ So far so good....
*by G***. on 26 December 2025*

So far so good. Ring functions well with a few caveats. The times showing wake up etc are generally inaccurate. For example today I was up at 0458 and the ring indicated 0809. This then throws off some of the other stats. Additionally, I would like some more explanation or simplification of the stats and figures in the app as I am quite new at this. The ring looks good but come off periodically while I am doing things around the house. Perhaps I should have sized differently but wear it on my index finger by choice. May have to replace it for different size. Generally I am satisfied but would really like a less complex app UI for us newbies. Will update after further usage.

## Frequently Bought Together

- ULTRAHUMAN Ring AIR – Sleep and Fitness Tracker, Smart Ring for Men and Women, No app fee for standard features, Up to 6 days battery life (Aster Black, 5)
- Oura Ring 4 Sizing Kit - Size Before You Buy Oura Ring 4 - Unique Sizing - Receive Credit for Purchase

---

## 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.ro/products/609466441-ultrahuman-ring-air-aster-black-size-5-smart-ring-no](https://www.desertcart.ro/products/609466441-ultrahuman-ring-air-aster-black-size-5-smart-ring-no)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-20*