In preparation for Baselworld 2017, today we are going to talk about one of the hottest Rolexes on Instagram with more than 30,000 posts. Released during Baselworld 2013, the Rolex GMT Master II BLNR a.k.a 'Batman' ref. 116710BLNR was the first attempt by Rolex to release a bi-color cerachrom bezel in their lineup. Today, almost four years later, the GMT Master BLNR has turned into an icon and a watch that is quite hard to get as the supply by Rolex is always somewhat limited.