Smartwatch Colmi i28 Ultra Black

Colmi i28 Ultra (black) is a compact smartwatch with a 1.43-inch AMOLED touchscreen (466×466 px), a 260 mAh Li‑Po battery and an ergonomic silicone strap. The device supports Bluetooth 5.3, has a speaker and microphone for calls, offers multiple health sensors (heart rate, blood pressure, SpO2) and sleep monitoring, and provides a variety of sports modes and standard smart features such as notifications, remote camera and music control. The watch is IP68 water resistant and is compatible with Android 4.4+, iOS 8.0+ and Harmony OS via the COLMI FIT app.

Advantages

The Colmi i28 Ultra combines a high‑resolution AMOLED display with multi‑day battery life (about 5–7 days in normal use) and fast magnetic charging (approx. 2 h). It includes real‑time activity tracking (steps, distance, calories), multiple exercise modes, and built‑in microphone and speaker for Bluetooth calls. Lightweight materials (zinc alloy + ABS + PC) and a skin‑friendly silicone strap provide everyday comfort, while IP68 protection ensures resistance to splashes and rain.

Suitable for

• Everyday notification management and Bluetooth calling
• Fitness tracking and multiple sports modes (running, cycling, yoga, weightlifting, etc.)
• Health monitoring: heart rate, blood pressure and SpO2 measurements, sleep tracking
• Users of Android, iOS or Harmony OS devices who want remote camera/music control

Key specifications

• Manufacturer: Colmi
• Model: i28 Ultra
• Color: Black
• Display: 1.43‑inch AMOLED, 466×466 px
• Chipset: JL7013A6S
• Memory: RAM 640 KB, ROM 256 Mb
• Bluetooth: 5.3, range approx. 10 m
• Battery: Li‑Po 260 mAh, charging time ≈ 2 h, operating time ≈ 5–7 days (normal), standby ≈ 30 days
• Speaker & Microphone: yes
• Dimensions & weight: 43.5 × 43.5 × 11 mm, 51 g
• Materials: Zinc alloy + ABS + PC; silicone strap (20 mm width)
• Water resistance: IP68
• Compatibility & app: Android 4.4+, iOS 8.0+, Harmony OS; app: COLMI FIT
• Supported watch languages: multiple (incl. English, Russian, French, German, Spanish, etc.)

How to use

Charge the watch using the supplied magnetic charging cable until fully charged (approx. 2 hours). Install the COLMI FIT app on a compatible smartphone and pair the device via Bluetooth 5.3. Use the touchscreen to navigate watch faces, access health measurements and select exercise modes. Receive and view notifications directly on the watch, and place or answer Bluetooth calls using the built‑in speaker and microphone. For accurate health and activity data wear the watch snugly on your wrist and keep the app permissions enabled.

Recommendations

For more reliable heart rate, blood pressure and SpO2 readings wear the watch on clean, dry skin and keep it positioned just above the wrist bone. Avoid prolonged exposure to high temperatures and corrosive liquids despite IP68 resistance. Regularly update the COLMI FIT app and watch firmware to ensure best compatibility and feature set.