Seiko 5 (Seiko Five) Men's Superior Automatic Watch . Approximate Thickness: 12 mm. Approximate Case diameter including crown: 40 mm. Day and date indicator. See-thru case back. Sapphire crystal. 23 jewels. Textured dial with lumibrite hands and markers. Stainless steel bracelet with 2 pushed in button. Stainless steel case. #SNZ437 SNZ437K1 #.