Orient x Automatic ft. Multi-Year Calendar Men Formal Round 50m Water Resistant Watch RA-BA0002EDiscover this innovative multi-year calendar watch from Orient, showcasing the year, month, date, and day in a unique design. This automatic watch features hand winding, a see-through case back, and easy calendar adjustments via the crown. With a refined 43.5 mm case and bold hour markers for improved legibility, it appeals to those seeking originality.Caliber Number / MovementF6D22 (automatic with manual winding capacity)Power Reserve / AccuracyApproximately 40 hours (+25 to -15 seconds per day)CrystalMineral crystalLuminousNilCase / Band MaterialStainless steel case with stainless steel band (three-fold clasp with push-button release)Water Resistance50m / 5 barCase SizeThickness: 12.3 mmDiameter: 43.5 mmLength: 50.2 mmLug width: 22.0 mmOther SpecificationsOrient x Automatic ft. Multi-Year CalendarSee-through case backScrew case back21 jewelsDay, date, month and year displayStop second hand function (hacking mechanism)Regular timekeeping (analog display)