# Smart ring Oura Ring 4 Brushed Silver Size 12 — sleep, activity and recovery tracker

**URL:** https://aio.lv/en/product--oura-jz90-54220-12--11611781
**Data updated:** 2026-02-15 18:44 (EET)
**Category:** Smart rings
**Manufacturer:** Oura
**Manufacturer code:** JZ90-54220-12
**EAN:** 6430060153806
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 285.99 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 236.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oura-jz90-54220-12--11611781

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Oura Ring 4 in Brushed Silver, size 12, is a wearable smart ring designed to monitor sleep, activity, and recovery. It collects biometric data such as sleep stages, heart rate trends, and activity levels to provide personalized readiness and sleep insights via the companion app. Suitable for daily wear, it offers discreet 24/7 tracking and battery life for multi-day use.

## Long description

Oura Ring 4 in Brushed Silver, size 12, is a wearable health tracker designed for continuous biometric monitoring. The ring records sleep stages, nocturnal heart rate trends, activity intensity and duration, and recovery indicators. Worn on the finger, it provides discreet 24/7 tracking and syncs with the Oura app to deliver personalized readiness and sleep insights. The Brushed Silver finish offers a low-reflective, metal look suitable for everyday wear.
Advantages
The Oura Ring 4 combines multi-sensor data collection with a compact form factor to deliver detailed sleep and recovery analytics without the bulk of wrist-worn devices. Its design emphasizes comfort for all-day and night use, while automatic synchronization with the companion app enables timely insights. The ring’s materials and finish provide a polished appearance that blends with casual and formal attire, and its battery life supports multi-day operation between charges.
Suitable for
 People who want continuous sleep monitoring and sleep stage analysis
 Users tracking daily activity levels and exercise intensity
 Individuals seeking recovery and readiness insights based on biometric trends
 Users preferring a discreet, jewelry-like wearable for 24/7 monitoring
 Those who want simple app-based summaries and long-term trend tracking
Key specifications
 Form factor: Finger ring with brushed silver finish
 Size: 12 (ring size)
 Sensors: Optical heart rate sensor, temperature sensor, inertial measurement unit
 Tracked metrics: Sleep stages, heart rate trends, activity minutes, recovery and readiness scores
 Connectivity: Bluetooth for companion app synchronization
 Battery life: Multi-day operation between charges
 Wearability: Water-resistant design suitable for daily use
How to use
Place the ring on the finger that provides the best fit; a snug but comfortable fit ensures accurate readings. Pair the ring with the Oura companion app via Bluetooth and follow the in-app setup steps to create a profile and enable permissions for continuous monitoring. Wear the ring continuously, including during sleep, to capture complete biometric cycles. Charge the ring using the supplied charger when the app indicates low battery, and keep firmware up to date through the app to maintain optimal performance.
Usage recommendations
For consistent results, wear the ring on the same finger and maintain a secure fit; avoid loose positioning. Follow manufacturer guidance for cleaning and care to preserve the brushed silver finish. Use the Oura app regularly to review nightly sleep reports, activity summaries, and readiness trends to make informed decisions about rest and training intensity.

## FAQ

### How much does the Oura Ring 4 Brushed Silver Size 12 — Smart ring cost, and is it available for purchase?

The price is 285.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 27.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Oura Ring 4 Brushed Silver Size 12 — Smart ring be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Oura products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Oura service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11611781/68527375_large.webp