Casio General x Digital ft. Lightweight Army Unisex Casual Hexagon Water Resistant Watch F-91WB-1A F91WB F91 F-91 F-91WB Elevate your timekeeping with a sustainable twist. This slim, lightweight watch boasts a minimalist face, essential features like date/day display, alarm, and stopwatch, all wrapped in eco-friendly bio-based resin, making it a stylish and responsible accessory for any occasion. Module / Movement 593 (quartz) Battery Life / Accuracy Approximately 7 years (+/-30 seconds per month) Crystal Resin glass Light LED light Case / Band Material Resin case with bio-based resin band Water Resistance Water resistant Case Size Thickness: 8.5 mm Diameter: 35.2 mm Length: 38.2 mm Lug width: Integrated Other Specifications Casio General x Digital ft. Lightweight 1/100-second stopwatch (up to 60 minutes, elapsed time, split time) Daily alarm Hourly time signal Auto-calendar (set at 28 days for February) 12/24-hour format Regular timekeeping (digital display)