Citizen Eco-Drive x Analog ft. Zenshin Senkei Men Formal Hexagon 100m Water Resistant Watch CA4691-59L CA4691 CA-4691 Experience 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 / Movement B620 (Eco-Drive aka solar powered) Power Reserve / Accuracy Approximately 9 months when fully charged (+/-15 seconds per month) Crystal Sapphire crystal Luminous Luminous on hands and indexes Case / Band Material Titanium case with titanium band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 11.7 mm Diameter: 41.0 mm Length: 48.7 mm Lug width: Integrated Other Specifications Citizen Eco-Drive x Analog ft. Zenshin Senkei Screw case back Date and 24-hour display Chronograph up to 60 minutes in 1/5-second increment Insufficient charge warning function Overcharge prevention function Equipped with small second hand Regular timekeeping (analog display)