Movement: Automatic Case size (approx.): (Width) 37mm x (Thickness) 11mm Water resistance: Water resistant for everyday use (3 ATM) Calendar (date, day of the week) Product Details: Black (Dial Color), Silver (Band Color), Stainless Steel (Case Material), Stainless Steel (Band Material), Analog Display, Automatic Mechanical Movement, Water Resistance: Daily Life Water Resistance, Tri-fold Push Clasp, Hardlex Crystal, Functions: Calendar (Date & Day), Skeleton Back, Screw-down Back, Size: Case Size 42x38x11mm (Height x Width x Thickness), Wrist Circumference Approx. 200mm, Weight Approx. 116g, Band Width 18mm, Lug Width 18mm, Accessories: Simple Instruction Manual