Introducing the new Master Compressor Diving Pro Geographic Navy SEALs. In 2007, the Master Compressor Diving Pro created a stir and a huge craze in the diving world with its mechanical depth gauge that gives the case such a characteristic shape. With this exclusive Navy SEALs version, a 300-piece limited edition in pink gold with a shotpeened ceramic bezel, watertight to 300 metres, Jaeger-LeCoultre is once again asserting the exceptional nature of its depth gauge system. This instrument has a membrane that is sensitive to the water pressure exerted on its metallic head. It transmits the information to a rack, which in turn transmits it to a hand.