Product Specifications Brand : Seiko Series : Presage Model Number : SPB045J1 Purchase date : Jan 2023 Driving system : Automatic with manual winding mechanism Caliber Number : 6R27 Case Material : Stainless steel case Case back: stainless steel and sapphire crystal Band Material : Crocodile Glass Material : Dual-curved sapphire crystal Glass coating : Anti-reflective coating on inner surface Drive duration : Power reserve: 45 hours Accuracy : -15 to +25 seconds per day (when static) Water resistance : 10 bar water resistance Magnetic reluctance : Magnetic resistance Size : H47.8mm x W40.5mm x D12.8mm Weight : 95g