Bring sophistication to your day with the CITIZEN® Calendrier. This timeless watch features 12/24-hour time, world time in 24 cities and day/date. Featured with stainless steel case and bracelet with dark blue dial. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number 8729. Specifications - Model: BU2021-51L - Dial: Blue Luminous Hands - Case: 44 mm Silver-Tone Stainless Steel Rotating Inner Dial Ring;Screw-Back Case - Lug: 23 mm - Band: Bracelet Stainless Steel Deployment Clasp with Push Button - Crystal: Anti-Reflective Mineral Crystal Impact and shatter resistant - anti-reflective coating deflects light - Water-Resistance: WR100/10Bar/333ft (Swimming, Marine Sports) - Weight (g): 158.76 - Movement: 8729 Eco-Drive Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries. - Functions: 12/24-Hour Time Analogue Day/Date Item # BU2021-51L #BestRingEver #TidewaterDiamond