Citizen Eco-Drive x Analog ft. Chronograph Men Casual Formal Hexagon 100m Water Resistant Watch CA4590-81A CA4590 CA-4590Experience precision timekeeping with this sleek stainless steel watch, powered by Citizen's innovative Eco-Drive technology. Enjoy up to 9 months of battery life, 100m water resistance, and advanced features like chronograph, date display, and insufficient charge warning. Perfect for those seeking a stylish and reliable timepiece.Caliber Number / MovementB620 (solar Eco-Drive)Power Reserve / AccuracyApproximately 9 months when fully charged (+/-15 seconds per month)CrystalMineral crystalLuminousLuminous on handsCase & Band MaterialStainless steel case with metal band (three-fold clasp with push-button release)Water Resistance100m / 10 barCase SizeThickness: 12.1 mmDiameter: 41.0 mmOther SpecificationsCitizen Eco-Drive x Analog ft. ChronographDate and 24-hour displayInsufficient charge warning functionOvercharge prevention functionChronograph up to 60 minutes in 1/5-second incrementEquipped with small second handRegular timekeeping (analog display)