Made of high-quality TPU wrist strap ensuring its toughness and durability in use. IP65 waterproof and dustproof, fearless of wind, rain and sweat, suitable for more scenes, waterproof for life hand washing. No fear anytime, anywhere. It adopts 1.3-inch, 240 * 240 resolution HD display screen, light and streamlined appearance design, which is meticulously built from the inside out and round. take on an altogether new aspect. The system is newly upgraded, with smooth operation and long endurance: the app can be downloaded by scanning the code on the bracelet. Basic functions include: accurate step counting, walking distance detection, heart rate detection, blood pressure detection, blood oxygen detection, exercise mode, long sitting reminder, intelligent alarm clock, etc.