High-Definition Large Display 1.43-inch AMOLED screen with 466x466 resolution offers crystal-clear visuals for easy reading and navigation Comprehensive Health Monitoring Track blood pressure, heart rate, blood oxygen, sleep patterns, and receive sedentary reminders for a holistic approach to your well-being Versatile Sports Modes Choose from multiple exercise options including walking, running, cycling, and more, with real-time tracking of distance, calories, steps, and heart rate Bluetooth Calling High-quality Bluetooth 5.4 technology enables clear hands-free calls directly from your wrist 3ATM Water Resistance Withstand splashes, rain, and brief immersion in water, making it suitable for everyday use and light water activities Long Battery Life Enjoy up to 7 days of usage on a single charge, with wireless charging capability for convenient power-ups Specifications: Display: 1.43" AMOLED touchscreen, 466x466 resolution Processor: AB5691 by Blueberry Semiconductor Memory: 400KB RAM, 128Mb ROM Compatibility: Android 5.0and and iOS 10.0and Connectivity: Bluetooth 5.4, Optional NFC Sensors: Accelerometer (STK8321), Barometer (STK71161), Heart Rate Monitor (HX3918) Battery: 400mAh Lithium Polymer, Wireless charging Water Resistance: 3ATM Charging Time: Approximately 4 hours Standby Time: Up to 7 days Languages: Supports 20 languages including English, Chinese, Spanish, and more Features: Step counting, Calorie tracking, Distance measurement, Multiple sport modes, Blood pressure monitoring, Sleep tracking, Smart notifications, Music control, Weather updates