Automatic with manual winding capability. 21,600 vibrations per hour. Power reserve: approximately 41 hours. 24 jewels . Dark gray uni-directional rotating bezel. Light beige sunray dial . Day/date calendar. Luminous hands and markers. Screwdown see-through caseback. Case diameter: 38.0mm. Stainless steel case and bracelet. Tri-fold push button release clasp with secure lock. Water resistant to 10 bar, 100 meters (330 feet) Caliber 4R36