●don't massage to first number ●massage to number ●Used only two three days ●Screen: 1.47-inch TFT display with a smooth 60Hz refresh rate. ●Body: Slim 9.99mm profile and a lightweight 16.5g build. ●Water resistance: Rated up to 5ATM (50 meters). ●Customization: 100+ watch faces and interchangeable colorful straps. ●Vital monitoring: All-day heart rate, sleep tracking, stress measurement, and blood oxygen levels. ●App sync: Pairs via Bluetooth 5.3 to the Mi Fitness app ●Battery: Up to 18 days of typical usage on a single charge. ●Convenience: Music playback controls, camera remote shutter, and phone finder. [1, 2, 3, 4]