Military-grade hardcore appearance, showing the true colours of masculinity The watch is made of high-strength titanium alloy case, which is precision CNC machined and anodised to provide strong abrasion and corrosion resistance, easily resisting scratches, collisions and harsh environments. The angular lines of the design, together with the rugged gear-shaped crown, are tough and atmospheric, showing the military-like perseverance and boldness. The dial is equipped with a 1.4-inch high-definition AMOLED screen, which is still clearly visible under bright light, so there is no need to worry about reflections for outdoor use. The strap is made of military-grade nylon with a stainless steel quick-release buckle, which is firm, durable and comfortable to wear, and fits the wrist without slipping, so that it is a stable companion for both strenuous sports and field combat. Professional heart rate monitoring, accurate health protection Built-in professional-grade PPG optical heart rate sensor, with advanced algorithms, to achieve 24-hour real-time heart rate monitoring. Whether it is daily rest, high-intensity exercise or extreme environment, it can accurately capture every heartbeat change. When abnormal heart rate fluctuations are detected, the watch will immediately send out vibration alerts to help you adjust your state in time and prevent health risks. It also supports Heart Rate Variability (HRV) analysis, which provides you with a scientific interpretation of your health status through the assessment of the function of the autonomic nervous system of the heart, making health management more targeted. Comprehensive fitness tracking for scientific training It supports more than 50 sports modes, including running, swimming, hiking, cycling, skiing and other outdoor sports, as well as strength training and yoga, which are common in gyms. During exercise, the watch automatically records key data such as exercise track, exercise distance, exercise duration, pace, calorie consumption, etc. Through professional exercise data analysis, it helps you to understand the intensity and effect of exercise and formulate a more scientific training plan. Built-in barometric altimeter, electronic compass, accelerometer and other multiple sensors can real-time monitor the altitude, direction, slope and other information, providing reliable data support for outdoor adventure, so that you have more confidence in challenging the limit.