The Doxa SUB 300T watch has a cool stainless steel case that's shaped like a barrel, just like the original 1969 SUB 300T Conquistador. This was one of the very first watches to have a helium release valve that could handle the intense pressure of diving. The watch has been improved over the years, and can now withstand water pressure up to 120 bars. Inside, there's a self-winding movement with a date function, known as the caliber 2824-2. The reference number for this particular watch is 840.10.021.10, and it has a sleek silver dial.