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header-product Smart ring Colmi R03 18.1 mm size 8 Black
15.49 €

Smart ring Colmi R03 18.1 mm size 8 Black

Smart ring Colmi R03 size 8 Photo 1
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Smart ring Colmi R03 size 8 Photo 1
Smart ring Colmi R03 size 8 Photo 2
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Smart ring Colmi R03 size 8 Photo 4
Smart ring Colmi R03 size 8 Photo 5
Smart ring Colmi R03 size 8 Photo 6
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Sale OUT! Discount 14%

You save: 2.50 €

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Smart ring Colmi R03 18.1 mm size 8 Black

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Smart ring Colmi R03 18.1 mm size 8 Black

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Usual Price: 17.99 €
Your Price:
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The discount is valid from 12.06.2026 to 12.07.2026

Short description

Colmi R03 is a smart ring in black finish with an inner diameter of 18.1 mm (size 8). Designed for compact on‑finger wear, it offers wearable smart functionality in a ring form factor. Suitable for users who prefer discrete health and notification features on their hand, the ring fits daily use and simplifies interactions without wearing a wrist device.
Available at price 15.49 €: 25 pcs.
Total available for order: 50 pcs.
Warranty: 1 Year
SKU: 11108741
Manufacturer: Colmi
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Cheapest with

Latvijas Pasts pakomāts

Pick-up points

Latvijas Pasts pakomāts

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
08.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
13.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.10 kg)
Parcel couriers
Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts nodaļa
13.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Payment Methods:
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Product information

Description

Colmi R03 smart ring (size 8, inner diameter 18.1 mm) in black provides convenient access to health and activity data via the QRing app. The titanium alloy ring is lightweight (4.7 g), water resistant to 5ATM and comes with a magnetic charging case and USB-C cable. It records sleep stages and quality, continuous heart rate, blood oxygen, steps, calories and distance, and supports 21 sports modes. The ring pairs with Android, iOS and Harmony OS devices over Bluetooth 5.0 and receives OTA updates.

Advantages

The Colmi R03 combines compact design and durability: titanium alloy construction resists corrosion and wear while the 5ATM rating allows use during swimming and intense workouts. The included charging case extends operating time by recharging the ring up to 13 times on a single case charge. Lightweight construction and a variety of sensors provide continuous health monitoring and activity tracking accessible in the QRing app.

Key specifications

  • Manufacturer: Colmi
  • Model: R03
  • Color: Black
  • Size / Inner diameter: 8 / 18.1 mm
  • Material: Titanium alloy
  • Weight: 4.7 g
  • Main chipset: BlueX Micro RF03
  • Memory: ROM 512 KB
  • HR sensor: Vcare VC30F
  • Accelerometer: STK8321
  • Bluetooth: 5.0
  • Ring battery: lithium-polymer 15 mAh, magnetic charging, 3–5 days operating time, charging time about 1 h, over 300 cycles
  • Charging case battery: lithium-polymer 200 mAh, USB-C charging, approx. 300 cycles, charging time about 1 h
  • Compatibility: Android 4.4 or later, iOS 8.0 or later, Harmony OS
  • App: QRing
  • Water resistance: 5ATM
  • Features available in app: step counter, calorie counter, distance measurement, heart rate, sleep monitoring, 21 sports modes, exercise log, blood pressure, SpO2, stress level, remote photo
  • Updates: OTA

How to use

Install the QRing app on an Android or iOS device, enable Bluetooth and follow the app pairing instructions to connect the Colmi R03. Wear the ring on a comfortable finger so sensors maintain contact with skin. Use the app to view daily, weekly and monthly reports for heart rate, sleep, SpO2 and activity data. Place the ring in the magnetic charging case and connect the case via the included USB-C cable to recharge the case and the ring; a full charge of the ring takes about 1 hour.

Recommendations

Charge the case before first use and keep the ring clean and dry except when swimming; although rated to 5ATM, avoid exposing the ring to detergents or salt water for prolonged periods. For accurate measurements, wear the ring snugly and ensure the sensor area contacts the skin. Use the QRing app to update firmware via OTA and to review health reports regularly.

Description

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Stock data
Warehouse Stock Delivery to the store Store Price
WH130 25 08.07.2026 Best delivery
Discount 14%
15.49 € Best price
WH357 25 14.07.2026 22.99 €
Discount 14%
15.49 €
Stock: 25
Delivery Date: 08.07.2026 Best delivery
Warehouse: WH130
22.99 €
Stock: 25
Delivery Date: 14.07.2026
Warehouse: WH357

Customer reviews

Customer questions

FAQ

How much does the Smart ring Colmi R03 size 8 cost, and is it available for purchase?

The price is 15.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 08.07.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.