The Rolex Sea-Dweller Stainless Steel Black Dial ref. 126600-0001 is a remarkable timepiece that exemplifies Rolex's mastery in creating professional dive watches with exceptional durability and functionality. The Sea-Dweller collection has a long-standing reputation as a reliable tool for professional divers and this reference continues this legacy with its impressive features and robust design. Crafted from corrosion-resistant stainless steel, the 43mm case of the Sea-Dweller ensures the watch can withstand the harshest underwater conditions. The black dial of the Sea-Dweller provides excellent legibility, even in challenging environments. The Chromalight luminescent hour markers and hands emit a long-lasting blue glow, enhancing visibility in dark conditions. The date window, equipped with a Cyclops lens at 3 o'clock, magnifies the date for easy reading. With a water resistance of up to 1,220 meters (4,000 feet), the Sea-Dweller is built to withstand extreme depths, making it an indispensable tool for professional divers. The Helium Escape Valve, located at 9 o'clock, allows excess pressure to escape during decompression, ensuring the watch's integrity. With its robust construction, precise movement, and advanced features, this timepiece is a reliable companion for those who seek adventure and require uncompromising performance in the underwater world.