The round shape improves the affinity of the product. The SOS button breaks through the side shape and improves the fun of the product. There are many patterns on the back, which increase the user's freedom of choice. The SOS logo is three-dimensional and prominent, showing more quality. The IC card slot is placed in the middle, which is easy to take and conforms to the requirements of man-machine. The inside and outside corners are fine and lubricated to avoid scratching the skin and clothes; The metal decorative strip connects the upper and lower parts naturally to enhance the overall texture; The fashionable buckle is processed with high bright edge technology, which greatly improves the fashion texture. The innovative buckle hanging head is convenient, firm and durable. The card slot is placed on the side of the badge, which is easy to take out and insert, and the card is better fixed in the frame to prevent falling and losing; The one button call button is embedded to avoid touching it unnecessarily. The charging port echoes with the indicator light, and the charging state is clear at a glance. A variety of colors are available. Different experiences can present electronic certificates of different colors according to the color preferences of different people.