For Sale Seiko Mod Watch . Seiko Mod Explorer . Case diameter : 36 or 39 mm without crown Function : Hour, Minute, Second Water resistant : 100 Meters/330 feet Case material : Polished Stainless Steel 316L Case back : Screw case back Stainless Steel Glass material : Sapphire crystal Anti-Reflective Coat Strap material : Solid End Link Oyster Brushed Stainless Steel amp; Glide Lock Buckle Movement : Seiko NH35A Power Reserved : 42 hours Dial Colour : Black Seiko Explorer Oyster Perpetual