Citizen Eco-Drive x Analog ft. Elegance Men Casual Formal Tonneau 100m Water Resistant Watch BU4018-11H BU4018 BU-4018 Experience precision and sophistication with this eco-friendly timepiece, boasting a 6-month power reserve, luminous hands, and day/date display. Housed in a stainless steel case with a leather band, this stylish watch is water-resistant up to 100m and features advanced functions to ensure optimal performance. Caliber Number / Movement 8723 (solar Eco-Drive) Power Reserve / Accuracy Approximately 6 months when fully charged (+/-15 seconds per month) Crystal Mineral crystal (curved) Luminous Luminous on hands Case & Band Material Stainless steel case with leather band Water Resistance 100m / 10 bar Case Size Diameter: 44.0 mm Other Specifications Citizen Eco-Drive x Analog ft. Elegance Day and date display Insufficient charge warning function Overcharge prevention function Regular timekeeping (analog display)