Bring sophistication to your day with the CITIZEN® Calendrier, powered by any light with Eco-Drive. This timeless watch features 12/24-hour time, world time in 24 cities and day/date. Men's watch featured with stainless steel case, chocolate brown leather strap with matching brown dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number 8729. Product Details MODEL BU2020-29X 2/06/2018 MOVEMENT TECHNOLOGY 8729 Eco-Drive Ring Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries. BAND LENGTH (MM) 273.05 CASE WIDTH (MM) 44 LUG WIDTH (MM) 23 BAND TYPE Strap Leather CASE MATERIAL Silver-Tone Stainless Steel Screw-Back Case CRYSTAL Anti-Reflective Mineral Crystal Impact and shatter resistant - anti-reflective coating deflects light CLASP Buckle DIAL Brown Luminous Hands WATER-RESISTANCE WR100/10Bar/333ft [Swimming, Showering & Snorkeling] ADDITIONAL FUNCTIONS 12/24 Hour Time Analog Day/Date