SHIORLAM Men's 1.57in Stainless Steel Skeleton Automatic Waterproof Mechanical Watch with Exhibition Case

Features a case diameter of 1.57 inches (40mm) and a case thickness of 0.57 inches (14.5mm) for a sleek and modern look. Equipped with an automatic mechanical movement that operates at 21,600 vibrations per hour (3Hz) and has a power reserve of 40 hours. Weighs 0.24 pounds (107g) for a comfortable and lightweight feel on the wrist. Offers 3ATM (30M) water resistance, making it suitable for everyday wear and light water activities. Showcases a front and back skeleton design that reveals the intricate 25-jewel automatic movement with Incabloc shock protection. Features a sapphire-coated mineral glass with a hardness of 9H for enhanced scratch resistance. Secured with a 316L stainless steel deployant clasp for a secure and comfortable fit. Includes luminous hands with Super-LumiNova® BGW9 for improved visibility in low-light conditions.