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header-product Smart ring Colmi R03 18.9 mm size 9 Black — wearable health & notification device
28.49 €

Smart ring Colmi R03 18.9 mm size 9 Black — wearable health & notification device

Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 1
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 2
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 3
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 4
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 5
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 6
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 1
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 2
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 3
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 4
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 5
Smart ring Colmi R03 — 18.9 mm size 9 Black Photo 6
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Smart ring Colmi R03 18.9 mm size 9 Black — wearable health & notification device

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Short description

Colmi R03 smart ring in Black, model R03 with 18.9 mm inner diameter (size 9). A compact wearable that monitors basic health metrics and delivers smartphone notifications. Designed for everyday use, it provides discreet on-finger tracking, vibration alerts and compatibility with supported Colmi apps. Useful for users who prefer a ring form factor for activity monitoring and notification management.
Available at price 28.49 €: 71 pcs.
Total available for order: 142 pcs.
Warranty: 1 Year
SKU: 11108742
Manufacturer: Colmi
free shipment

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:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

Colmi R03 smart ring in black (inner diameter 18.9 mm, size 9) is a compact wearable that provides on-finger monitoring of basic health metrics and records physical activity. The ring is made of a titanium alloy, weighs 4.7 g and is rated 5ATM for water resistance. It connects via Bluetooth 5.0 to the QRing app (Android, iOS, Harmony OS) for viewing daily, weekly and monthly reports and managing settings. The set includes the smartring, a magnetic charging case with USB-C, a USB-C cable and a user manual.

Advantages

The Colmi R03 combines lightweight titanium alloy construction with 5ATM water resistance and long battery support via a portable charging case. It measures heart rate, blood oxygen saturation and sleep phases, records steps, calories and distance, and supports 21 sports modes. The ring charges in about 1 hour, offers 3–5 days of standalone operation and the included case can recharge the ring multiple times from its 200 mAh battery.

Suitable for

  • Everyday health monitoring (sleep, heart rate, SpO2)
  • Activity tracking and workout logging
  • Swimming and water-based exercise (5ATM)
  • Users who prefer discreet wearable form factor

Key specifications

  • Manufacturer: Colmi
  • Model: R03
  • Color: Black
  • Size / Inner diameter: 9 / 18.9 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: Li‑Po 15 mAh, magnetic charging, ~1 h charge time, 3–5 days operating time
  • Charging case battery: Li‑Po 200 mAh, USB‑C charging, recharges ring up to 13 times, ~1 h case charge time
  • Number of charging cycles (ring/case): over 300 / approximately 300
  • Water resistance: 5ATM
  • Compatibility: Android 4.4+; iOS 8.0+; Harmony OS
  • App: QRing
  • Available app features: step counter, calories, distance, 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 a compatible Android or iOS device and pair the Colmi R03 via Bluetooth 5.0. Wear the ring on a finger that provides a comfortable and stable fit, ensuring the sensors maintain contact with the skin. Use the app to view real-time measurements, configure sport modes and access daily, weekly and monthly health reports. When the ring battery is low, place it in the magnetic charging case and plug the case into power via the included USB‑C cable.

Usage recommendations

For the most accurate heart rate, SpO2 and sleep readings, wear the ring snugly but comfortably and keep the sensor area clean. Avoid exposing the ring to strong chemicals or abrasive surfaces; although it is 5ATM water resistant, avoid prolonged exposure to hot water and high-pressure jets. Charge the case and ring regularly to maintain continuous monitoring and install app updates (OTA) when available.

Description

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Stock data
Warehouse Stock Delivery to the store Store Price
WH130 71 08.07.2026 Best delivery 28.49 € Best price
WH357 71 14.07.2026 31.99 €
28.49 €
Stock: 71
Delivery Date: 08.07.2026 Best delivery
Warehouse: WH130
31.99 €
Stock: 71
Delivery Date: 14.07.2026
Warehouse: WH357

Customer reviews

Customer questions

FAQ

How much does the Smart ring Colmi R03 — 18.9 mm size 9 Black cost, and is it available for purchase?

The price is 28.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 142 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.