This bold Sottomarino Italia Squalo Martello chronograph dive watch features a thick screwdown case and screw down crown. The custom trident second hand and trident engraving on the crown add to the elegance of this bold watch. The Squalo Martello also boasts 200M water resistance with a Japanese quartz movement and a solid 316L stainless steel case. Sottomarino is Italian for submarine. Reminiscent of the namesake, each Sottomarino Italia watch is built as resilient and durable as a submarine with the combination of refined elegance for any occasion.