Citizen AT8124-91L Men’s Eco-Drive Radio-Controlled Stainless Steel Bracelet Watch. Eco-Drive movement (recharged by any light source, no need to change battery). Caliber H800. Stainless steel case. Stainless steel bracelet. Blue dial with luminous hands and markers.Insufficient charge warning function. Overcharge prevention function. Date display at 3 o’clock position. 24hrs and day display. Chronograph. Perpetual calendar. Power reserve level indication. Global radio-controlled. UTC (Universal Time Coordinated). 26 cities world time. Sapphire glass. Water resistance: 200-meters. Approximate case diameter: 44mm. Approximate case thickness: 12mm.