Features: 1.35-inch full screen, 390*390 resolution is a new generation, high-pixel display resolution blessing allows each picture to be displayed clearly and smartly. The narrow-sided design rejects heavy bezels and brings you a more open visual enjoyment. Custom dial, cool dial, change the trend as you like 24 hours a day continuous heart rate monitoring intelligent heart rate algorithm, fast and accurate, monitor and remind your heart rate anytime and anywhere, let you understand your physical condition and enjoy a healthier life One-key blood pressure measurement: 24-hour blood pressure test, intelligent Al algorithm, you can view nearly 7 blood pressure records to understand the change process of blood pressure, more detailed data in the scientific chart, always pay attention to health Monitor sleep: Perform sleep quality analysis, support viewing all-day sleep data and recent 7-day sleep data, to help you adjust your sleep habits to get a higher quality sleep Support multi-sport mode: professional sports analysis During exercise, you can view all-day pedometer data and exercise data for the past seven days at any time Specification： Screen size: 1.35 inch round screen Offline payment: Alipay payment code Resolution: 390x390 APP: Da Fit andiord system: support Android 4.4 and above IOS system, Apple IOS9.0 or above Bluetooth: 5.0 Waterproof rating: IP67 Package: 1*smart meter 1*charging cable 1*Instruction