Citizen #AV0050-54A Men's Eco Drive Calibre 2100 Chronograph Watch Ecologically Friendly, Solar Powered Eco-Drive Quartz Movement Stainless Steel Case and Bracelet, Push Button Release Clasp Sapphire Crystal, Date Display, Luminous Hands and Markers, Chronograph Alarm Function, Power Reserve Indicator Case Size: 44mm Diameter, 14.7mm Thickness Water Resistant - 200M, Screw Down Case Back