The COLMI i28 Ultra is a feature-rich smartwatch combining a stunning 1.43" AMOLED display with comprehensive health tracking, voice assistant support, and a 5–7 day battery life. Available in Black, Silver, and Rose Gold — each with a standard silicone strap or optional magnetic strap variant. Compatible with Android 5.0+ and iOS 9.0+ via the COLMI Fit app.
Key Features
Display: 1.43" AMOLED — 466×466 px — full touchscreen
Bluetooth: 5.3
Waterproofing: IP68
Battery: 260mAh lithium polymer — 5–7 days use — charges in ~2 hours (magnetic cable)
Strap: 20mm silicone (removable) or magnetic strap option
Material: Zinc alloy + ABS + PC case
Colours: Black, Silver, Rose Gold (standard or magnetic strap)
Health & Fitness Tracking
Heart rate, blood oxygen, blood pressure
Sleep monitoring
Step counting, calories, mileage
Workout tracking with records
Breathing training & physiological cycle
Smart Features
Call & contact management, voice assistant
Notifications: WhatsApp, Instagram, Facebook, SMS, and more
Weather, music control, stopwatch, alarm, calculator, calendar
Massive watch face downloads via app
Multi-language support: 22+ watch languages, 25+ app languages
Compatibility
Android 4.4+ / iOS 8.0+ / Harmony OS — connect via COLMI Fit app.
