This Ultra Luxury Adjustable Metal Chain Strap has Strong Metal clasp, convenient for you to adjust the size. Ensure your watch is steady and secure, no problem for most sports also. Finest 316L Steel polished by several steps and colored by vacuum plating. Hence it is more wearable and corrosion-resisting and will not 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.