Features Omega's Co-Axial Movement. Black Aluminum Rotating Bezel, Black Dial with bold luminous hands (Broad Arrow) & hour markers, Orange 12,3,6 & 9 Arabic Numeral Hour Markers, Date window Displayed between the 4 & 5 o'clock position, slightly domed Sapphire Crystal. Helium Escapement Valve located on the edge of the case at the 10 o'clock position.