# Smart ring Colmi R03 20.3 mm size 11 Gold — Colmi R03 smart ring, 20.3 mm, size 11, gold finish

**URL:** https://aio.lv/en/product--colmi-r03-gold-11--11108749
**Data updated:** 2026-03-16 16:35 (EET)
**Category:** Smart rings
**Manufacturer:** Colmi
**Manufacturer code:** R03 Gold 11
**EAN:** 6972436985678
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 27.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 23.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--colmi-r03-gold-11--11108749

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Colmi R03 is a smart ring in gold finish with a 20.3 mm internal diameter corresponding to size 11. Designed for wearable convenience, it provides compact on-finger smart functionality. Suitable for daily use, the ring integrates with compatible devices for notifications, activity tracking, or quick control actions, offering a discreet alternative to wrist wear.

## Long description

Colmi R03 is a smart ring with a 20.3 mm inner diameter (size 11) and a gold finish. Made from a titanium alloy and weighing 4.7 g, the ring integrates heart rate, blood oxygen and sleep monitoring with activity tracking. It pairs with the QRing app (Android and iOS) via Bluetooth 5.0 and offers water resistance to 5ATM. The package includes the smart ring, a USB-C cable, a magnetic charging case and a user manual.
Advantages
The Colmi R03 combines a compact, lightweight titanium-alloy design with continuous health monitoring and multi-day battery life. It supports heart rate and SpO2 measurements, sleep phase analysis and 21 sports modes while providing water resistance for everyday wear and swimming. The included charging case extends the ring’s operating time by allowing multiple recharges on the go.
Suitable for
Daily health monitoring (heart rate, blood oxygen, sleep)
Activity tracking and workout logging
Swimming and water-based activities (5ATM)
Users preferring discreet on-finger wearable devices
Key specifications
Inner diameter: 20.3 mm (size 11)
Material: titanium alloy
Weight: 4.7 g
Bluetooth: 5.0
Heart-rate sensor: Vcare VC30F
Accelerometer: STK8321
Memory: ROM 512 KB
Ring battery: lithium‑polymer, 18 mAh, magnetic charging, ~5–7 days operating time
Charging case battery: lithium‑polymer, 200 mAh, USB‑C, charges the ring multiple times
Charging time (ring): about 1 hour
Number of charging cycles (ring): over 300
Water resistance: 5ATM
Compatibility: Android 4.4 or later, iOS 8.0 or later, HarmonyOS
App: QRing (generates daily, weekly and monthly reports)
How to use
Install the QRing app on a compatible Android or iOS device and pair the Colmi R03 via Bluetooth 5.0. Wear the ring on a finger with a comfortable fit; the inner diameter is 20.3 mm (size 11). Use the app to view continuous heart rate, blood oxygen and sleep data, select sports modes, and review activity reports. To recharge, place the ring in the magnetic charging case or connect the case to power via the included USB‑C cable.
Usage recommendations
For best measurement accuracy, wear the ring snugly but not too tight, keep the sensor area clean, and sync with the QRing app regularly. Avoid exposing the ring to strong chemicals or extreme temperatures despite its 5ATM water resistance.

## FAQ

### How much does the Smart ring Colmi R03 Gold 20.3 mm size 11 cost, and is it available for purchase?

The price is 27.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 62 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 09.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Colmi 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 Colmi 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/11108749/61795178_large.webp