6 sensors + GPS functionality track physical activity in real time; Supports 8 different activities, including running, biking, and swimming; Heart rate monitor, step counter, gyroscope, and Bluetooth connectivity; Includes blood oxygen measurement, cardio load status, sleep measurement and analysis, sunrise and sunset time display, and moon age data; App integration function to easily set goals and manage progress; Dual-layer frame design delivers a comfortable fit and easy operations; Biomass plastics embody harmony with nature; High-brightness full-auto LED backlight for readability in the dark; 20 bar water-resistant and shock resistant; Solar-assisted charging