When the first GMT Master debuted in the 1950s, the GMT hand wasn’t independent, and the bezel was fitted with an aluminum insert. The case was also topped with an acrylic crystal and was only waterproof up to 50 meters. Today, the newer-model GMT Master II boasts a noticeably more contemporary aesthetic via a scratch-resistant sapphire crystal, a larger Maxi display on the dial, and a Cerachrom ceramic bezel insert. The case and bracelet also received an upgrade and wear slightly larger than it’s 5-digit predecessors. The ref. 116710BLNR is a stunning example of the modern GMT Master II that includes a black and blue “Batman” insert on the bezel and a matching blue arrow hand on the dial. This reference was recently discontinued in favor of the newer ref. 126710 and is a hot item on the secondary market. Don’t miss out on an opportunity to add it to your collection today.