Automatic mechanical movement. Black stainless steel case with a 40 mm diameter measuring approximately 39.5 mm wide and projecting 5.7 mm from the wrist. Equipped with sapphire crystal glass both front and back (excluded). Water resistant up to 200 meters/660 feet. Features luminous hands and indices for enhanced legibility underwater or in low light conditions. Powered by Caliber Heuer 02 movement ensuring precise timekeeping. Includes date display function at the 3 o'clock position through a small aperture window (excluded). Luminous material treated with Super-LumiNova® does not require batteries or charging. Watch band is genuine leather, fitted with stainless steel folding clasp equipped with an easylock II system for secure and precise fit adjustment (length excluded).