The Watch 2i Screen: High-definition AMOLED color screen, 1.85 inches (some sources indicate 1.95 inches), with a smooth refresh rate. Connectivity and Calls: Supports making and receiving calls directly via Bluetooth. Battery: 330 mAh battery, lasts up to 14 days with normal usage. Health Monitoring: Measures heart rate, tracks sleep, and monitors blood oxygen levels. Fitness: Supports multiple sports modes and accurate daily activity tracking. Design and Water Resistance: 5ATM water resistance, metal frame, lightweight and comfortable design. Compatibility: Compatible with Android and iOS via the HONOR Health app.