The Ringlock system, introduced in 2008, equips Rolex diving watches designed for extreme depths.
Its unique, patented three-layer case structure – slightly domed sapphire crystal, highly resistant compression ring made of nitrogen-enriched steel and RLX titanium alloy case back – can withstand the colossal pressure of the abyss. The Ringlock system serves as a catalyst in Rolex's quest for perfect hermeticity, pushing its mastery of waterproofness even further.
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