When swimming, fluorine rubber watch straps hold distinct advantages over metal ones. Fluorine rubber straps are lightweight and flexible. During swimming, they won't impose heavy burdens or restrict movements like metal straps. This allows for free movement in the water. Moreover, fluorine rubber is highly water-resistant. Unlike metal straps that may rust or corrode when exposed to chlorine or saltwater, it ensures the watch remains in good condition even after multiple swims, guaranteeing its service life and functionality. In contrast, metal straps can be uncomfortable and even cause skin irritation when wet. They also tend to accumulate water and are difficult to dry quickly. In short, for swimming enthusiasts, fluorine rubber straps are the ideal choice for an active lifestyle.