Features: stainless steel case with black hard coating stainless steel and ceramic bracelet fixed black ion-plated stainless steel bezel kinetic movement caliber 7d48 anti-reflective coated sapphire crystal screw case back perpetual calendar leap year indicator power save function time relay system large double-window date calendar at 12 o'clock three-fold clasp with push button release 100m water resistant approximate case diameter 46.30mm