Citizen Promaster x Radio-Controlled ft. Modernized Men Casual Formal Round 200m Water Resistant Watch CB5034-91W CB5034 CB-5034Unleash your competitive edge with a high-performance timepiece that combines style and precision. This exceptional chronograph features advanced technology, including radio-controlled timekeeping, tachymeter, and Eco-Drive power, making it the perfect accessory for the modern sports enthusiast.Caliber Number / MovementE660 (solar Eco-Drive)Power Reserve / AccuracyApproximately 10 months when fully charged (+/-15 seconds per month)CrystalSapphire crystalLuminousLuminous on hands and indexesCase & Band MaterialStainless steel case with metal band (three-fold clasp with push-button release)Water Resistance200m / 20 barCase SizeDiameter: 44.6 mmOther SpecificationsCitizen Eco-Drive x Radio-Controlled ft. ModernizedScrew-down crownScrew case backDay, date, 24-hour and dual time displayInsufficient charge warning functionOvercharge prevention functionPower reserve indicatorPower saving function (second hand stop to save power when left in the dark)Alarm functionChronograph up to 60 minutes in 1-second incrementPerpetual calendarWorld time (24 time zones)Global radio-controlled (Japan/USA/Germany/China)Regular timekeeping (analog display)