Citizen Eco-Drive x Analog ft. Marine Men Casual Formal Round 100m Water Resistant Watch AW1816-89E AW1816 AW-1816Discover a stylish and functional timepiece featuring a stainless steel case, crystal glass, and a black dial with a wavy structure. With Eco-Drive technology, date display, and 10-bar water resistance, this watch combines precision and style in a 41.5mm design perfect for marine enthusiasts.Caliber Number / MovementJ810 (solar Eco-Drive)Power Reserve / AccuracyApproximately 8 months when fully charged (+/-15 seconds per month)CrystalMineral crystalLuminousLuminous on hands and indexesCase & Band MaterialStainless steel case with metal band (three-fold clasp with push-button release)Water Resistance100m / 10 barCase SizeThickness: 11.8 mmDiameter: 41.5 mmOther SpecificationsCitizen Eco-Drive x Analog ft. MarineDate displayInsufficient charge warning functionOvercharge prevention functionRegular timekeeping (analog display)