Seiko Men's 'Recraft Series' Japanese Automatic Stainless Steel Dress Watch (Model: SNKN77) Self-winding, 21,600 vibrations per hour 21 jewels Day/Date calendar Screwdown see-through caseback Case Diameter 44.0mm 50M water resistant Caliber 7S26 Self-Winding - 21,600 vibrations per hour 24 jewels Japanese-automatic Movement Case Diameter: 44mm Water Resistant To 165 Feet