In 25 years, the P6780 is only the second diving watch ever created by Porsche Design. The first diving watch was the Ocean Diver back in 1983. The P6780 is a unique watch with an adjustable 46.8mm wide case. Here’s how it works: the dial houses a cylindrical steel container which is connected to a titanium bridge via a hinge. Once the case is lifted the crown is revealed and the time can be reset. Inside there is an automatic ETA caliber 2892-A2 and it’s water resistant up to 1,000 meters. $TBA.

The camouflage motif on the dial of the Maxi Marine Diver sets this watch apart from the rest of the watches in the Ulysse Nardin Maxi Marine collection. The stainless steel case is 42.7mm wide with an UN-26 movement and water resistance up to 300 meters. Features include hour markers on the dial and seconds markers on the bezel as well as two sub-dials and a date window at 6 o’clock. Only 50 watches have been released. $7,998.

RGM makes high-end luxury watches and they have really outdone themselves with this professional diving watch. The watch has a 43.2mm wide brushed stainless steel case with anti-magnetic casing. The black dial comes in either a matte or glossy finish and you can choose between a brushed stainless steel bracelet or a 22mm strap. Inside there is a modified ETA 2892 movement protected by an extremely thick, 5mm wide flat sapphire crystal, a double gasket caseback and a double gasket screwdown crown. Water resistance is up to 2,500 feet. $3,550.

Orient Watches is a watch company that was founded in Japan, that has made some spectacular diving watches. This one is no exception, which is rated to be water resistant up to an impressive 300 meters. Everything about this watch looks solidly built, and would make a great addition to your collection.