COLMI i28 Ultra Smartwatch

🔧 Basic Parameters

⚙️ Chip & Sensor Parameters

Main Chip | JL7013A6S
RAM + Storage | 640 KB RAM, 256 MB ROM
Heart‑Rate Sensor | VC30F
Waterproof Rating | IP68 (dust and water resistant)

🖥️ Display Parameters

Screen Size | 1.43″ AMOLED
Resolution | 466 × 466 pixels
Touch Type | Full-screen touch

🔋 Battery Parameters

Battery Type | Lithium Polymer
Capacity | 260 mAh
Protection IC | Seiko Y1
Charging Method | 2-pin magnetic cable
Charging Time | About 2 hours
Usage Time | 5–7 days
Standby Time | Up to 30 days

📱 Software & Compatibility

App Name | COLMI Fit
Compatible OS | Android 4.4+, iOS 8.0+, HarmonyOS
Watch Languages | English, Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, Ukrainian, Italian, Portuguese, Dutch, Polish, Hungarian, Czech, Romanian, Indonesian, Thai, Turkish, Vietnamese, Hindi

🩺 Health & Communication Features

• Heart rate monitoring
   

• Blood pressure tracking
   

• SpO₂ (blood oxygen) monitoring
   

• Sleep tracking
   

• Female cycle tracking
   

• Bluetooth calling (with speaker and mic)
   

• Contact sync & call log
   

• App notifications (calls, messages, social media)
   

• Voice assistant
   

• Breathing training
   

• Sedentary reminder
   

• Alarm, stopwatch, timer, calculator, calendar
   

🏃 Fitness & Sports Modes

• 100+ sports/activity modes
   

• Step tracking
   

• Calorie and distance tracking
   

• Exercise history viewable on watch or app
   

🎨 Appearance & Build

Body Material | Zinc alloy with ABS/PC
Strap Type | Silicone / Magnetic
Strap Width | 20 mm (removable)
Dimensions | Approx. 43.5 × 43.5 × 11 mm
Weight | Approx. 30–51 g (depending on strap)