Citizen Eco-Drive x Satellite Wave ft. GPS Men Casual Formal Round 200m Water Resistant Watch CC1054-56E CC1054 CC-1054Experience precision and innovation with this cutting-edge timepiece, featuring a solar-powered Eco-Drive movement, 2-year power reserve, sapphire crystal, and advanced satellite wave technology, all encased in a durable titanium design with a 200m water resistance rating, perfect for the modern explorer.Caliber Number / MovementH909 (solar Eco-Drive)Power Reserve / AccuracyApproximately 2 years when fully charged (+/-15 seconds per month)CrystalSapphire crystal (curved, anti-reflective coating)LuminousLuminous on hands and indexesCase & Band MaterialTitanium (Diamond-Like Carbon [DLC] and Duratect) case with titanium band (three-fold clasp with secure lock, push-button release)Water Resistance200m / 660ft diver’sCase SizeDiameter: 52.0 mmOther SpecificationsCitizen Eco-Drive x Satellite Wave ft. GPSDay, date and 24-hour displayInsufficient charge warning functionOvercharge prevention functionPower reserve indicatorPerpetual calendarWorld time (26 cities)Summer time on/offSatellite time signal reception function (manual reception/circumstantial reception)Regular timekeeping (analog display)