Based on the original Modello Uno dive watch, the new U1-HGMT features a unidirectional bezel, graduated for 24 hours, with a grey GMT hand that can be independently adjusted in 24-hour increments to indicate a second time-zone. The caseback is engraved with a custom display highlighting the world's 24 major time zones, and the movement inside is the Sellita SW330-2. BRAND UNIMATIC MODEL Modello Uno GMT REFERENCE U1-HGMT MANUFACTURED Italy FUNCTION Hours, minutes, seconds, date, second time-zone LUME Yes, Super-LumiNova CRYSTAL Sapphire CASE MATERIAL Stainless steel CASE SIZE 41.5mm CASE THICKNESS 11.25mm DIAL COLOR Black CALIBER Automatic Sellita SW330-2 MOVEMENT TYPE Automatic WATER RESISTANCE 300 meters POWER RESERVE 42 hours BRACELET/STRAP MATERIAL Black two-piece shell cordovan leather strap and additional two-piece nylon strap LUG WIDTH 22mm