Choose from a broad range of watch face themes online so that you're always in style. Support selecting photos as watch faces too.Battery life can last up to 12 days under daily use in a single full charge state, and the longest use for a single time is about 20 days.Turn on heart rate function, sleep monitoring, call reminder twice a day, message reminder 8 times a day; wrist-raise to light up screen 150 times a day; exercise twice a week, run 60 minutes each. Default watch face; sleep monitoring; turn off phone Bluetooth connection turn off continuous heart rate monitoring and other function.12 workout modes and high-precision motion sensor help you track and improve your athletic performance.Excessive physical and mental consumption can lead to hypoxemia in the body. Haylou RT2 supports the measurement of blood oxygen saturation at any time, helping you analyze and adjust your status in time, and always maintain full vitality.