This Silhouette Crystal design sets the standard for playful yet elegant. Polished stainless steel, the black mother-of-pearl dial and crystal mark this as a dress watch, while the oversized 32mm case, subdials and water resistance add touches of sportiness to the design. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number 8635. MODEL FD1030-56Y 8/10/2017 MOVEMENT 8635 TECHNOLOGY Eco-Drive Powered by any light source, continuously and sustainably, eliminating the need to replace watch batteries. CASE WIDTH (MM) 32 CRYSTAL Mineral Crystal Impact and shatter resistant In original box. Good condition Please review all Info and pictures before purchase and feel free to ask questions.