Smart wearable devices include but are not limited to watches, bracelets, glasses, clothing, etc. They can collect and analyze users' health, exercise and other data by integrating sensors, wireless communication and data analysis technologies, thereby providing personalized health management and lifestyle services. The development of smart wearable devices has benefited from breakthroughs in multiple technologies, such as sensor technology, wireless communication technology and data analysis technology. These technological advances enable smart wearable devices to achieve more accurate data collection, faster data transmission and more accurate data analysis. Inmark's low-power SOT23 small MOS has the characteristics of small size and relatively small footprint, and has been widely used in smart wearables.