The Colmi C8 Max is a Bluetooth-calling smartwatch featuring a 1.93-inch IPS display, all-round health monitoring (heart rate, SpO2, sleep), and a battery life of up to 5-7 days. It is compatible with Android, iOS, and Harmony OS devices via the COLMI Fit app. Technical Specifications Feature Detail Display 1.93-inch IPS full touch screen with 240×288 pixel resolution Connectivity Bluetooth 5.3 for calling and data syncing Battery Capacity 280mAh Lithium polymer (Note: some sources indicate 250mAh) Battery Life Up to 5-7 days of typical usage Charging Method Wireless charging (approx. 2 hours to full charge) Water Resistance IP68 Waterproof rating (Note: some sources indicate 1ATM) Main Chip JL7012F Heart Rate Chip HX3918 Compatibility Android 4.4 , iOS 8.0 , Harmony OS App Name COLMI Fit Materials Zinc Alloy iML case, silicone strap Key Features and Sensors Health Monitoring: Includes 24/7 heart rate monitoring, SpO2 (blood oxygen) saturation monitoring, and all-day stress monitoring. Activity Tracking: Features a step tracker, calorie tracker, and over 100 sports modes to track workouts. Advanced GoMore algorithms are used for accurate sleep analysis (deep sleep, light sleep, wake times). Communication: Supports Bluetooth calling, allowing users to make, answer, or reject calls directly from the watch. It also provides push notifications for calls, messages, and app alerts. Smart Functions: Includes a voice assistant (in most models), music player control, weather updates, alarm clock, timer, flashlight, find phone function, calculator, and even some built-in games. Customization: Offers a wide range of watch faces (100 ) and supports customizable watch faces to match personal style.
