Inspired by the original Rolex Deep Sea Special, the Pro-Hunter Deepsea single red is limited to 100 individually-numbered pieces. In addition to the technical features found on the Deepsea (helium release valve, very high pressure-resistance, domed sapphire glass, nitrogen-hardened steel and titanium case components, and "Glidelock" clasp) the stainless steel case is treated with a hard black Diamond-Like Carbon coating, and the dial is imprinted with the words "Pro-Hunter" in crimson. Brand-new watch supplied with original manufacturer's box and certificate, and two-year Pro-Hunter guarantee.