MOVEMENT:Japanese OS20 Working Chronograph movement CASE DIAMETER:�30mm THICKNESS:�11mm DIAL COLOR: Black Dial, White Ring Subdials CASE MATERIAL:�Solid Stainless Steel 316L BRACELET: Stainless Steel Bracelet with Insignia Double Deployant Clasp� FRONT GLASS:�Synthetic Sapphire BACK GLASS:Solid Case back with Graphic and detail Engraving on Case Rims� BEZEL: Unidirectional Diver Bezel HACK MOVEMENT:�Yes� CLASP TYPE:�Tang Buckle DATE INDICATOR:�At 4:30 position GMT HAND:�Adjustable via Crown