Product material: aluminum alloy shell and environmentally friendly TPU strap.Standby time: about 20 days.Use time: 3-6 days (depending on actual usage).Screen size: 1.7-inch high-definition rounded full touch screen.Sensors: gravity sensor, photoelectric sensor, temperature sensor.Battery: High molecular polymer 230MAH battery.System requirements: Androids5.0 and above, IOS9.0 and above.Product features: Adopt dual-mode Bluetooth calling, support the Basic Rate of traditional Bluetooth and enhanced data rate work, connect mobile phones to answer/make calls, free your hands, make high-definition calls, and make life more convenient. 1.70-inch screen, narrow bezel full Full screen with rounded corners. Women's health management, providing menstrual reminders for women. It can provide 24-hour blood oxygen saturation detection. Heart rate, blood pressure detection, real-time reading of heart rate and blood pressure changes. 8 sports modes: including walking, running, cycling, skipping rope, badminton , basketball, football, swimming. Real-time master heart rate, exercise duration, steps, mileage data, calorie consumption data and intelligent exercise data analysis. High-precision daily step counting, real-time recording of steps, calculation of exercise mileage, calorie consumption, and record of step data in the recent week. Scientific sleep detection, record recent sleep data, assist in understanding sleep situation, judge and record the state of deep sleep/light sleep time, and help you understand the quality of sleep every night. A variety of dials can be selected and installed online. With intelligent voice assistant. Support multiple languages. Support message push, support call, SMS, Facebook, Twitter and other message push reminders, free your hands, do not miss any important information. You can set reminders for life scenes, such as: drinking water reminder, alarm clock reminder, theater mode, etc. Scene reminder. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.