Colmi R12 Smart Ring
Buy the Colmi R12 Smart Ring in Bangladesh from T-TECH. A genuine smart ring with reliable performance and great value. Price in Bangladesh: 3,500. 100% authentic with warranty and cash on delivery nationwide.
From: ৳ 3,500.00
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Payment Methods
Delivery Time
Inside Dhaka: Next day to 3 business days. *Inside Dhaka North and South City Corporation. Outside Dhaka: Next day to 5 business days.
Shipping Charge
Inside Dhaka: Starts from 70Tk. Outside Dhaka: Starts from 120Tk.
Payments
Spend TK.5000+ & pay in 3-36 months.
Colmi R12 Smart Ring
Descriptions
Stay on top of your health now with the Colmi R12 Smart Ring. This ring lets you monitor your heart, sleep, and daily activity all day and night. With Bluetooth 5.2 it connects easily to both Android and iOS devices. The Realtek RTL8762 ESF chip and ST LIS2DOC sensor provide accurate tracking while the Vcare VC30F heart rate sensor gives reliable results every time.
Its IP68 and 5ATM waterproof design means you can wear it in the rain, washing hands or during workouts without worry. Wireless charging and an 18mAh battery keep it powered effortlessly. Using the QRing app, you can view all your health data quickly and conveniently making it easier to understand your fitness and wellness at a glance.Order from T-Tech or visit our shop at Shah Amanat Market, Chittagong.
Specification
| Brand | Colmi |
| Model | R12 |
| App Support | QRing |
| Compatible with | Android 5.1 or above, iOS 8.0 or above |
| Connectivity | 5.2 BLE (Bluetooth Low Energy) |
| Chipset | Main chip: Realtek | Chipset Model: RTL8762 ESF |
| Battery Info | Battery type: Lithium polymer | Capacity: 15mAh (7#~9#), 18mAh(10#~13#) | Charging mode: Wireless charger |
| Sensors | ST LIS2DOC | Heart Rate Sensor | Vcare VC30F |
| Other Features / Info | Multiple sports tracking | Intelligent Control at Your Fingertips |
Feature
- Continuous heart rate monitoring keeps track of your health all day and night.
- Sleep tracking helps you understand and improve your nightly rest patterns easily.
- Waterproof with IP68 and 5ATM rating for safe use in rain or swimming.
- Comes with Realtek RTL8762 ESF chip for accurate data and smooth performance.
- Wireless charging with long-lasting battery for convenient power-ups.
COLMI R12 Smart Ring Best Price in Bangladesh
COLMI R12 Smart Ring Best Price in Bangladesh is 3,500 BDT.
FAQs
1. How do I set up the COLMI R12 Smart Ring?
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Download and install the QRing app on your smartphone.
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Turn on Bluetooth and open the app to search for the ring.
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Pair the device and grant all necessary permissions.
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Make sure the ring fits snugly but comfortably on your finger for accurate readings.
2. What health data does the R12 track?
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Heart rate (24/7 continuous monitoring)
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Blood oxygen (SpO₂)
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Sleep patterns and duration
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Step count, calories, and general activity levels
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Sports tracking for selected workouts
3. How accurate are the sensors?
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Designed for general health and wellness tracking, not medical-grade accuracy.
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Data accuracy improves when worn correctly — snug fit with good skin contact.
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Provides reliable trends over time rather than precise single readings.
4. How long does the battery last?
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Typical Use: 3–5 days depending on usage.
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Standby Mode: Up to 10 days.
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Charging Time: About 1–1.5 hours via wireless charging base.
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Battery life varies with features like continuous heart-rate monitoring or SpO₂ tracking enabled.
5. Is the COLMI R12 waterproof?
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Rated IP68 (some models 5ATM).
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Safe for rain, handwashing, and swimming.
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Avoid exposure to high-pressure water, hot tubs, or saunas.
6. What should I check before buying?
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Ensure you choose the correct ring size — proper fit is essential for comfort and sensor accuracy.
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Verify your phone is compatible (Android 5.1+ or iOS 8.0+).
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Confirm the product warranty and purchase from an authorized retailer.
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Keep the firmware and app updated for best performance.
7. What are the limitations?
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Battery life is shorter than a smartwatch due to compact size.
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No screen for live data or notifications — information is viewed in the app.
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Some users may experience minor connection drops or inconsistent sleep tracking.
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App features and updates may vary by region.
8. Who is it best for?
Ideal for:
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People who prefer a minimal, lightweight wearable instead of a smartwatch.
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Those focused on basic health tracking (heart rate, sleep, SpO₂).
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Users who value comfort and style in a discreet form factor.
Not ideal for:
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Users needing advanced smartwatch features (GPS, notifications, apps).
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Those requiring medical-grade precision for health monitoring.
| Color | Black, Gold, Silver |
|---|
Brand
Colmi
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