This Ultra Luxury Magnetic Silicon Chain Strap has Strong magnetic clasp, convenient for you to adjust the size. Ensure your watch is steady and secure, no problem for most sports also. Strap is comfortably wearable and corrosion-resisting and will never be rusty. The Strap First Layer of Anti-Sweat treatment is effective against sweat penetration which also makes it waterproof.Quick Release Pins are included with the strap which helps in easily changing straps.This Strap is fashionable, high grade and durable, giving a nice professional look on any occasion, no matter sports, casual, daily, or business.