Seiko Presage Cocktail Time Automatic SRPB41J1Seiko Presage Cocktail Time Automatic SRPB41J1 Caliber 4R35 automatic movement with 41 hours power reserve. 3 hands with calendar. Blue cocktail time dial with index hour markers, and date window at the 3 oclock position. Movement Caliber Number 4R35 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 23 Functions Stop seconds hand function Date display Case Band Case Material Stainless steel Case Size Thickness: 11. 8mm