Screen: Large and clear 1.83-inch LCD screen. Connectivity and Calls: Supports Bluetooth voice calls (you can answer calls and talk directly from the watch). Compatibility: Fully compatible and works with all smartphones (Android and iPhone iOS). Battery: Very strong and lasts up to 12 days of normal use without frequent charging. Health and Sports: Supports tracking over 100 sports modes. Monitors heart rate and blood oxygen levels (SpO2). Tracks daily sleep quality. Water Resistance: 5ATM water resistant (suitable for swimming and resistant to sweat and rain).