Citizen Promaster x Radio-Controlled ft. Perpetual Chrono Men Casual Formal Round 200m Water Resistant Watch CB5925-82X CB5925 CB-5925 Experience the ideal mix of style and functionality with the Citizen Perpetual Chrono. This elegant watch features a perpetual calendar, dual time formats and alarm all synchronized with atomic clock precision. Its stainless steel case and bracelet complement a striking black dial with luminous hands and markers. Powered by Eco-Drive technology, it uses any light source, eliminating battery replacements. Caliber Number / Movement E660 (solar Eco-Drive) Power Reserve / Accuracy Approximately 10 months when fully charged (+/-15 seconds per month) Crystal Sapphire crystal (anti-reflective coating) Luminous Luminous on hands and indexes Case / Band Material Stainless steel case with metal band (three-fold clasp with secure lock, push-button release) Water Resistance 200m / 20 bar Case Size Thickness: 13.9 mm Diameter: 42.3 mm Other Specifications Citizen Promaster x Radio-Controlled ft. Perpetual Chrono Day, date, 24-hour and dual time display Insufficient charge warning function Overcharge prevention function Power reserve indicator Power saving function (second hand stop to save power when left in the dark) Alarm function Chronograph up to 60 minutes in 1-second increment Perpetual calendar World time (24 time zones) Global radio-controlled (Japan/USA/Germany/China) Regular timekeeping (analog display)