Switching out for Christmas Eve gathering with wife's family. Breaking out the Seiko Mod Daytona Chronograph in Green (against my red/white houndstooth Collars & Co. polo). Dial Automatic 39mm steel Watch Material: 904L Stainless Steel & Sapphire Glass Diameter: 39mm Water resistance : 10ATM Bezel: Keramik/Alu-Legierung Movement: SEIKO VK63 Frequency : 21600bph/3hz Bandwidth: 20mm Have an enjoyable Christmas Eve