Ball Engineer Hydrocarbon Aero GMT II

Brushed & polished stainless steel case. Patented crown guard protection. Stainless steel bi-directional bezel with a blue aluminum GMT bezel ring. The bezel insert is capped with a sapphire bezel & features a 24 hour scale with micro gas tubes luminosity. Black dial. Luminosity: 20 micro gas tubes on dial & hands. 24 micro gas tubes on bezel. Bold black & white hands. Index & numeral hour markers. Fine printed minutes/seconds tracks. Date window with magnifier at 3 o'clock. GMT Triple Time-Zone functions: Indicated via the additional central arrow-head hour hand. This hand makes a single rotation every 24 hours & points to the desired GMT time-zone on the bezel & dial flange. Fixed 12 hour scale on dial flange. 24 hour scale on the blue bezel. Ball Watch caliber RR1201-C, COSC Certified, beats at 28,800 vph (4Hz), 21 jewels, power reserve of +/- 42 hours.