---
product_id: 704969049
title: "Ring 4 - Silver - Size 7 - Size Before You Buy"
brand: "oura"
price: "¥147778"
currency: JPY
in_stock: true
reviews_count: 10
category: "Oura"
url: https://www.desertcart.jp/products/704969049-ring-4-silver-size-7-size-before-you-buy
store_origin: JP
region: Japan
---

# Advanced health monitoring Seamless smartphone app integration Long-lasting battery with wireless charging Ring 4 - Silver - Size 7 - Size Before You Buy

**Brand:** oura
**Price:** ¥147778
**Availability:** ✅ In Stock

## Summary

> 💍 Elevate your wellness game with the ring that knows you best.

## Quick Answers

- **What is this?** Ring 4 - Silver - Size 7 - Size Before You Buy by oura
- **How much does it cost?** ¥147778 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/704969049-ring-4-silver-size-7-size-before-you-buy)

## Best For

- oura enthusiasts

## Why This Product

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

## Key Features

- • **Power That Keeps Up:** Enjoy up to 7 days of battery life with fast, wireless charging—because your health never takes a break.
- • **Style Meets Function:** Available in multiple sizes and finishes, the Oura Ring 4 is the ultimate blend of tech and timeless elegance.
- • **Smart Sync, Smarter You:** Instant Bluetooth connectivity with Android and iOS devices delivers real-time data and personalized analytics.
- • **Precision Health Insights:** Track heart rate, sleep, and stress with clinical-grade accuracy to optimize your daily performance.
- • **Effortless All-Day Comfort:** Sleek, lightweight silver design ensures you barely notice it’s there—wear it 24/7 without compromise.

## Overview

The Oura Ring 4 in Silver (Size 7) is a cutting-edge wearable that combines sleek jewelry design with advanced health tracking. It monitors heart rate, sleep quality, and stress levels, syncing seamlessly with your smartphone via Bluetooth. With up to 7 days of battery life and wireless charging, it offers continuous insights to help you optimize your wellbeing—all wrapped in a durable, stylish ring perfect for everyday wear.

## Description

Free delivery and returns on eligible orders. Buy Oura Ring 4 - Silver - Size 7 - Size Before You Buy at desertcart UK.

Review: So So Happy! - I hesitated for a while before investing in this gadget. And I love my Gadgets! but after doing some homework on the competition, I decided to jump for it. First, the fit and metal colour are great, I couldn't be happier, the quality and durability is insane, i do everything with it, I rarely take it off. The connectivity to my Samsung Z Fold6 was flawless, no hiccups, plus, everything you open the app, it updates in no time. so great compatibility. Now, you need to give it time to gather data about you, of course... it will not happen overnight which is quite right, but the intel you get afterwards is great. Your body age, sleep quality, energy available, your stress, it is such a great little ring. it is a lot of money for such a small device but the value for money is worth it. I highly recommend it if you are curious and want to be nudge in the right direction for better health.
Review: Wonderful - Amazing! The price was excellent, the quality is great, it tracks my sleep, my meals, my daily activity and it looks elegant and sleek. You can wear it for days and the battery lasts a lot. The best Christmas present!

## Features

- Compact and intelligent design for comfortable everyday wear
- Advanced health monitoring capabilities, including heart rate, sleep patterns, and activity tracking
- Long battery life with convenient wireless charging
- Seamless smartphone app integration for detailed health and activity analytics
- Available in multiple finishes and sizes for personalized style

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D9WW6RPJ |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | 308 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Wearable Tech Rings |
| Colour | Silver |
| Connectivity technologies | Bluetooth |
| Customer Reviews | 4.3 4.3 out of 5 stars (5,656) |
| Date First Available | 3 Oct. 2024 |
| GPS | No GPS |
| Human interface input | Buttons |
| Item Weight | 180 g |
| Item model number | JZ90-54217-07 |
| OS | Android, iOS |
| Other display features | Wireless |
| Product Dimensions | 2.4 x 2.4 x 0.7 cm; 180 g |
| Special features | Heart Rate Monitor, Stress Monitor |
| What’s in the box | Information Booklet, Oura Ring 4, Oura Ring 4 Charger, Quick Start Guide, USB-C Cable |

## Product Details

- **Battery capacity:** 16 Milliamp Hours
- **Battery cell composition:** Lithium Polymer
- **Brand:** OURA
- **Connectivity technology:** Bluetooth
- **GPS:** No GPS
- **Memory storage capacity:** 4 GB
- **Operating system:** Android, iOS
- **Shape:** Round
- **Special feature:** Heart Rate Monitor, Stress Monitor
- **Wireless communication standard:** Bluetooth

## Images

![Ring 4 - Silver - Size 7 - Size Before You Buy - Image 1](https://m.media-amazon.com/images/I/5155uTN9BPL.jpg)

## Available Options

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

## Questions & Answers

**Q: How long should my ring work between charges?**
A: Oura Ring 4 typically lasts 5-8 days on a full charge, depending on usage. Contact Oura Member Care if you have questions or concerns with battery life, and they will ensure your problem is resolved

**Q: How do I choose the right Oura Ring size?**
A: Using the Oura Ring 4 Sizing Kit, choose a finger for your ring. We recommend the index, middle or ring finger. Wear the sizer ring for 24 hours to ensure the fit is secure and comfortable over the course of your day.

**Q: What's included?**
A: Oura Ring 4, Oura Ring 4 Charger, and USB-C Cable.

**Q: How do I see my Oura Ring metrics?**
A: After activating your Oura Ring, you can choose a monthly or annual membership to unlock full access to Oura’s features, daily health and wellness metrics, and personalized guidance.

**Q: Can I use more than one ring?**
A: Oura Members can now connect more than one Oura Ring 4 to their Oura App and quickly switch between them. Note, this feature only supports wearing and syncing data from one active Oura Ring at a time.

## Customer Reviews

### ⭐⭐⭐⭐⭐ So So Happy!
*by M***D on 18 October 2025*

I hesitated for a while before investing in this gadget. And I love my Gadgets! but after doing some homework on the competition, I decided to jump for it. First, the fit and metal colour are great, I couldn't be happier, the quality and durability is insane, i do everything with it, I rarely take it off. The connectivity to my Samsung Z Fold6 was flawless, no hiccups, plus, everything you open the app, it updates in no time. so great compatibility. Now, you need to give it time to gather data about you, of course... it will not happen overnight which is quite right, but the intel you get afterwards is great. Your body age, sleep quality, energy available, your stress, it is such a great little ring. it is a lot of money for such a small device but the value for money is worth it. I highly recommend it if you are curious and want to be nudge in the right direction for better health.

### ⭐⭐⭐⭐⭐ Wonderful
*by L***A on 17 December 2025*

Amazing! The price was excellent, the quality is great, it tracks my sleep, my meals, my daily activity and it looks elegant and sleek. You can wear it for days and the battery lasts a lot. The best Christmas present!

### ⭐⭐⭐⭐⭐ A great alternative to a smart-watch
*by S***Y on 16 June 2025*

I was keen to utilise technology to help with my fitness, but love mechanical watches so a smart-watch wasn't an option. Came across this and after some research I gave it a punt. Very happy customer, the ring is a doddle to set up and works a treat. Battery life is a snadge less than advertised but not enough to make me dock points. It's a shame about the subscription, as I think the ring is costly enough that it's something of a liberty to charge for ongoing use, they could lose things like the guided meditation etc and give a free option, or bake in more value-add to the app. Enough moaning though, what it does it does really well, giving me insights into my sleep patterns and broader health. I am happy I bought it and check the app at least daily months after buying.

## Frequently Bought Together

- Oura Ring 4 - Silver - Size 7 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life
- sylacor Ring Cover for Oura Ring Gen 4/ Gen 3, Anti-Scratch Elastic Silicone Oura Ring Case Protector for Men Women Working Out Gym
- ZOOROO 2-Pack 14K Gold Plated Stacking Rings for Oura Gen 4/Oura Gen 3, Cubic Zirconia Simulated Diamond Oura Ring Stack for Women

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**Shop now:** [https://www.desertcart.jp/products/704969049-ring-4-silver-size-7-size-before-you-buy](https://www.desertcart.jp/products/704969049-ring-4-silver-size-7-size-before-you-buy)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*