The Tudor Pelagos was first presented in 2012 as one of the first watches released by Tudor during its revamped era that started in 2010. The first generation of the Tudor Pelagos was only available with a black dial —with a two-liner depth rating— and powered by an ETA 2824 movement. When the Tudor Pelagos Blue ref. 25600TB was presented in 2015, it marked the first time that Tudor would be using an in-house calibre on any watch. The Tudor Pelagos Blue maintains the same titanium and steel 42 mm case construction as its predecessors but powered by the in-house calibre MT5612.