The Rolex Explorer I 40mm in Oystersteel is the modern evolution of one of Rolex’s most historically significant and purpose-built watches. Released in 2023 and continuing strong into 2025, the Explorer I with a 40 mm case offers a more contemporary wrist presence while maintaining its rugged roots and clean, no-nonsense aesthetic.
The case is forged from 904L Oystersteel, Rolex’s highly durable and corrosion-resistant stainless steel alloy. It’s paired with a matte black dial that prioritizes legibility above all, with iconic 3, 6, and 9 Arabic numerals, luminous baton markers, and the Rolex crown at 12 o’clock.
The dial is treated with Chromalight, Rolex’s proprietary blue-glowing luminescent material, ensuring exceptional readability in darkness. The flat sapphire crystal is scratch-resistant and complements the Explorer’s utilitarian design.
At its core is the Calibre 3230, Rolex’s high-performance automatic movement featuring a Chronergy escapement, Parachrom hairspring, and a 70-hour power reserve. It is certified as a Superlative Chronometer, guaranteeing precision of –2/+2 seconds per day after casing.
The three-link Oyster bracelet in brushed steel comes with the Oysterlock folding clasp and the Easylink 5 mm comfort extension, allowing you to adjust the fit on the fly.
Water-resistant to 100 meters (330 feet) and highly resistant to shocks and magnetic fields, the Explorer I 40mm is not just a tool for mountaineers—it’s an elegant, minimalist, and adventure-ready timepiece for everyday wear.