Stainless steel case. Stainless steel mesh "shark proof" bracelet - can be adjusted for wearing over the diving suit (can be up to 7mm thick due to a double extension system). Black dial with date display. 55mm x 48mm case diameter. 17.5mm case thickness. Chronometer. Automatic movement. Scratch resistant sapphire crystal. Bi-directional rotating bezel. Screw-in crown. Caliber: Omega 8500. Self-winding automatic movement with co-axial escapement for greater precision stability and durability. Free sprung-balance, 2 barrels mounted in series, automatic winding in both directions to reduce winding time. Visible bridges and the oscillating mass are decorated with exclusive Geneva waves in arabesque. Power Reserve: 60 hours. Helium release value. Water resistant up to 1200 meters (4000 feet).