In the realm of luxury watches, certain timepieces transcend mere functionality and become icons. The Rolex GMT-Master II "Batman," officially known by its reference number 126710BLNR (or previously 116710BLNR), is undoubtedly one of these legends. Nicknamed for its distinctive black and blue Cerachrom bezel reminiscent of the caped crusader's color scheme, the GMT-Master II Batman has captivated watch enthusiasts and collectors worldwide. This comprehensive guide delves into the history, features, allure, and everything you need to know about this highly sought-after Rolex.