---
product_id: 749672014
title: "SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10)"
brand: "sarunn er"
price: "₩146951"
currency: KRW
in_stock: false
reviews_count: 8
url: https://www.desertcart.kr/products/749672014-sarunn-er-smart-ring-with-sleep-monitoring-step-counting-heart
store_origin: KR
region: South Korea
---

# 0.1-inch ultra-thin display IP68 waterproof up to 80m 5-day battery, 30+ days with case SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10)

**Brand:** sarunn er
**Price:** ₩146951
**Availability:** ❌ Out of Stock

## Summary

> 💍 Elevate your wellness game—wear the future on your finger!

## Quick Answers

- **What is this?** SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) by sarunn er
- **How much does it cost?** ₩146951 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/749672014-sarunn-er-smart-ring-with-sleep-monitoring-step-counting-heart)

## Best For

- sarunn er enthusiasts

## Why This Product

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

## Key Features

- • **Sleep Like a Pro:** Advanced sleep analysis breaks down deep & light sleep phases so you can optimize your rest effortlessly.
- • **All-Day Vital Tracking:** Continuous heart rate, blood oxygen & blood pressure monitoring keeps your health front and center.
- • **Effortless Wearability:** Ultra-thin, lightweight stainless steel design feels like a second skin—wear it 24/7 without noticing.
- • **No Hidden Fees, Full Access:** Enjoy lifetime app features and real-time health insights with zero subscription costs—healthcare made simple.
- • **Seamless Multi-Sport Support:** Automatically tracks running, cycling, yoga, and more with precise step counting and calorie burn data.

## Overview

The SARUNN ER Smart Ring is a sleek, silver health tracker designed for iOS and Android users, featuring continuous monitoring of heart rate, blood oxygen, blood pressure, and sleep quality. With an ultra-thin 0.1-inch display, IP68 waterproof rating up to 80 meters, and a battery life lasting up to 5 days (extendable to 30+ with the charging case), it supports multiple sports tracking without subscription fees. Its lightweight stainless steel build ensures all-day comfort, making it a discreet yet powerful companion for proactive health management.

## Description

desertcart.com: SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) : Sports & Outdoors

Review: Good smart ring. - This ring works great for me! It measures my blood pressure, records my sleep pattern along with my blood oxygen saturation and heart rate. From a smart watch I had, I know I walk 3 to 5 miles a day where I work. I have not noticed step count on this ring. For the price, I find it to be a great purchase. I would love it if it showed the time of day.
Review: P.O.S. - It took over a month for this product to be shipped. When I received it the return window closed in a week. By the time I used the product and found out that it was a piece of junk my window was already closed to return. Don't waste your money and don't waste your time on this product.

## Features

- 【Check the Size Before Purchase】 Before buying the SARUNN ER Smart Ring, we strongly suggest that you refer to the size chart and carefully measure the circumference of your finger. This will ensure you get the most comfortable wearing experience and easily avoid any unnecessary returns or exchanges.
- 【Diverse Health Monitoring, All-round Protection】 The SARUNN ER Smart Ring has a variety of powerful health monitoring modes. Whether it's running, walking, hiking, cycling, yoga, dancing, skipping rope or other sports, it can automatically and accurately track key data such as the exercise route, exercise time, steps taken, heart rate, speed, calories burned and exercise distance in the app. Moreover, it can continuously track important health data such as heart rate, blood oxygen and blood pressure throughout the 24 hours of the day, protecting your physical health in an all-round way.
- 【Intelligent Sleep Tracker, Caring for Your Health】 This SARUNN ER fitness ring is like a considerate little assistant for your sleep health. It will accurately monitor the quality of your sleep, and record in detail the durations of deep sleep and light sleep, as well as the specific situations of your wakeful states. You just need to open the app at any time, and you can clearly view all kinds of sleep indicators. Then, according to the professional reports, you can easily adjust your lifestyle to embrace better-quality sleep.
- 【Long Battery Life and Ultra-thin Design, Enjoy the Convenience】 The SARUNN ER Smart Ring has a very strong battery life. After a full charge, the battery can last up to 5 days, easily keeping up with your busy lifestyle. When used with the smart charging case, the usage time can even exceed 30 days. It is widely compatible with both Android and iOS systems, which is very convenient and practical. In addition, the updated design is lighter, thinner and more comfortable, with a greatly improved wearing fit. It's so light that you can hardly feel it on your finger.
- 【90-meter Waterproof, Suitable for Various Scenarios】 The SARUNN ER Smart Ring has excellent waterproof performance, with a waterproof depth of up to 80 meters. Whether it's for daily wear, an intense workout session or a pleasant swimming time, it can handle it with ease. What's more, even if you have sensitive skin, you can still enjoy an extremely comfortable wearing experience when wearing this ring.
- 【No Subscription Fees, Enjoy Exclusive Services】 With the SARUNN ER Smart Ring, you don't need to pay any subscription fees, and you can unlock the full range of functions of the SARUNN ER Smart Health Monitoring App for life. Continuously enjoy the convenience of real-time health tracking, and also get professional and targeted advice, making health management easier and more efficient.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F94B5GMG |
| Additional Features | Activity Tracker |
| Band Material Type | Stainless Steel |
| Battery Cell Composition | Lithium Ion |
| Battery Cell Type | Lithium Ion |
| Best Sellers Rank | #223,366 in Electronics ( See Top 100 in Electronics ) #544 in Smart Rings #1,846 in Activity & Fitness Trackers |
| Brand | SARUNN ER |
| Built-In Media | Smart Ring*1, Charging Case*1, USB Charging Cable*1, User Manual*1 |
| Color | Silver |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 3.3 out of 5 stars 13 Reviews |
| Display Type | Analog |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Human Interface Input | Touchscreen |
| Manufacturer | SARUNN ER |
| Metrics Measured | Heart Rate Monitor, Blood Oxygen Monitor, Sleep Duration, Blood Pressure |
| Model Name | Smart Ring |
| Model Number | SF20250905B0F94B5GMG_B0F94B5GMG_1_TJ4RpA |
| Operating System | IOS, Android |
| Screen Size | 0.1 Inches |
| Shape | Round |
| Special Feature | Activity Tracker |
| Style Name | Modern |
| Supported Application | Blood Pressure Monitor, Fitness Tracker, Heart Rate Monitor, Pedometer, Sleep Monitor |
| UPC | 762833974599 |
| Warranty Type | Limited |
| Water Resistance Depth | 80 Meters |
| Water Resistance Level | Waterproof |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |

## Product Details

- **Operating System:** IOS, Android
- **Special Feature:** Activity Tracker
- **Connectivity Technology:** Bluetooth
- **Wireless Communication Standard:** Bluetooth
- **Battery Cell Composition:** Lithium Ion
- **GPS:** No GPS
- **Shape:** Round
- **Screen Size:** 0.1 Inches
- **Brand:** SARUNN ER
- **Model Name:** Smart Ring

## Images

![SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) - Image 1](https://m.media-amazon.com/images/I/71Jyfk-PiPL.jpg)
![SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) - Image 2](https://m.media-amazon.com/images/I/71NR3Gw5iSL.jpg)
![SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) - Image 3](https://m.media-amazon.com/images/I/71VzaT+UNbL.jpg)
![SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) - Image 4](https://m.media-amazon.com/images/I/71b4ZoXv2-L.jpg)
![SARUNN ER Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Silver, 10) - Image 5](https://m.media-amazon.com/images/I/71nAGFKmBEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good smart ring.
*by K***I on September 4, 2025*

This ring works great for me! It measures my blood pressure, records my sleep pattern along with my blood oxygen saturation and heart rate. From a smart watch I had, I know I walk 3 to 5 miles a day where I work. I have not noticed step count on this ring. For the price, I find it to be a great purchase. I would love it if it showed the time of day.

### ⭐ P.O.S.
*by M***I on January 5, 2026*

It took over a month for this product to be shipped. When I received it the return window closed in a week. By the time I used the product and found out that it was a piece of junk my window was already closed to return. Don't waste your money and don't waste your time on this product.

### ⭐⭐ No blood pressure measurement
*by L***E on August 23, 2025*

It doesn't measure blood pressure. It has some other odd measurements. The sleep measurement is useless. It always says my sleep is great regardless of how many hours I get or how many times I wake up through the night

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**Shop now:** [https://www.desertcart.kr/products/749672014-sarunn-er-smart-ring-with-sleep-monitoring-step-counting-heart](https://www.desertcart.kr/products/749672014-sarunn-er-smart-ring-with-sleep-monitoring-step-counting-heart)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-01*