When choosing the size of the ring of the bracelet, it needs to be selected according to the width of the user's palm. Generally, a bracelet of this size is equivalent to 58 mm, which is 5.8 cm when converted into centimeters. In the bracelet, this size bracelet belongs to the middle and large circle model. It can be found in the size comparison table that the inner diameter of the ferrule of this size is generally between 18- 19cm, and users can appropriately increase or decrease the bracelet size by one or two millimeters according to their own measured size.