All straps are made of leather.Maintenance: Do not use the watch near a heat source or in high-temperature environments, as excessive temperatures can melt the surface of the strap. Avoid direct sunlight and storage in damp environments. Pay attention to sweat, stains, and other hazards that may affect the silicone strap. Ensure that the strap is clean. If the watch has dust or encounters water, wipe it gently with a dry cotton cloth. Do not bend or flex excessively, as the silicone strap has a certain elasticity but can be damaged by excessive bending or force.