The ZULU Z-01 GMT specifications define the shared platform across all four configurations: NH34A automatic GMT caliber, 40.5 mm 316L stainless steel case, sapphire crystal, BGW9 ice-blue lume, exhibition case-back, five-link steel bracelet, and 100 m water resistance. The watch is built for travel and daily wear, with technical details carried across Polar, Abyss, Tropic, and Pacific.