Massage relaxation, health care, health monitoring and management, these are new types of personal electronic products, which usually require convenient charging (wireless charging will be more and more needed in the future), compact and portable (can be connected to external devices at any time (wireless connection is important) Sex), perception of human body information (requires a variety of biosensors). Sports fitness equipment includes small electronic devices that assist exercise and fitness, and they are usually wearable devices. With the advancement of technology and the development of society, more and more wearable Electronic products have entered people's lives.