Why limit the number of situations where you can wear some of the world's most innovative watches to just dry land? If you need to suit up to go below the surface, check out the new Ressence Type 5 Oil-Filled Dive Watch, a first for the Belgian company. Known for designing some of the most forward-thinking timepieces, the aspects that make Ressence so popular on land - their oil-filled cases and some of the most clear and legible indicators - also happen to make them extremely productive dive watches as the usual air in other pieces that buckles under pressure is replaced with a more resistant substance. Limited to a depth of 100 meters, the Ressence Type 5 Oil-Filled Dive Watch meets ISO 6425 standards for use in "extreme" conditions, with a 46mm wide and 15.5mm thick titanium case, which is integrated with seven bellows that control pressure inside, a 36 hour power reserve, and a Swiss ETA 2824-2 automatic movement. Available now via Ressence for 26,250 Euros.