Citizen Eco-Drive x Analog ft. Zenshin Senkei Men Formal Hexagon 100m Water Resistant Watch CA4691-59X CA4691 CA-4691Experience lightweight durability with the Super Titanium Chronograph, crafted from Citizen proprietary Super Titanium (40% lighter, 5x harder than steel). Features a striking textured dial with 3 sub-dials and date window. Powered by Eco-Drive technology - perfect for everyday wear. A perfect blend of strength and style.Caliber Number / MovementB620 (Eco-Drive aka solar powered)Power Reserve / AccuracyApproximately 9 months when fully charged (+/-15 seconds per month)CrystalSapphire crystalLuminousLuminous on hands and indexesCase / Band MaterialTitanium case with titanium band (three-fold clasp with push-button release)Water Resistance100m / 10 barCase SizeThickness: 11.7 mmDiameter: 41.0 mmLength: 48.7 mmLug width: IntegratedOther SpecificationsCitizen Eco-Drive x Analog ft. Zenshin SenkeiScrew case backDate and 24-hour displayChronograph up to 60 minutes in 1/5-second incrementInsufficient charge warning functionOvercharge prevention functionEquipped with small second handRegular timekeeping (analog display)