The Ball Engineer Hydrocarbon AeroGMT II Ref. DG2018C-S11C-BE is a rugged Swiss automatic GMT watch designed for travelers, pilots, and demanding everyday use. It features a 42 mm stainless steel case, a blue dial, and a distinctive black-and-green bidirectional sapphire GMT bezel. The dial, hands, and bezel incorporate Ball’s self-powered micro gas tubes, providing exceptional nighttime visibility without requiring an external light source. Its independently displayed GMT hand and rotating 24-hour bezel allow the wearer to track as many as three time zones. Powering the watch is the COSC-certified Ball Caliber RR1201-C automatic GMT movement, offering approximately 44 hours of power reserve. Additional features include Ball’s patented crown-protection system, resistance to shocks up to 7,500 Gs, anti-magnetic protection up to 4,800 A/m, and a domed sapphire crystal with an anti-reflective coating. This example is fitted with its original stainless steel bracelet and patented folding clasp. It is in excellent pre-owned condition, rated approximately 9/10, with several original protective stickers still present. The watch includes its original box and papers. Key Features: Model: Engineer Hydrocarbon AeroGMT IIReference: DG2018C-S11C-BEApproximate Year: Circa 2020sCase Size: 42 mmCase Material: Stainless steelDial: Blue with self-powered micro gas tube illuminationBezel: Black-and-green bidirectional sapphire GMT bezelMovement: Ball Caliber RR1201-C automatic GMTCertification: COSC-certified chronometerPower Reserve: Approximately 44 hoursCrystal: Domed sapphire with anti-reflective coatingBracelet: Original stainless steel bracelet with patented folding claspFunctions: Hours, minutes, seconds, date, GMT, and three-time-zone displayWater Resistance: 100 meters / 330 feetShock Resistance: Up to 7,500 GsAnti-Magnetic Resistance: Up to 4,800 A/mCondition: Approximately 9/10 with several original protective stickers intactBox: YesPapers: Yes Please note that the stated water-resistance rating reflects the model’s original factory specification and is not guaranteed for a pre-owned watch unless it has recently passed a pressure test.