The Rolex Explorer I is a watch that was first introduced in 1953. It was designed as a tool watch for explorers and mountaineers, and it has remained one of the most popular Rolex models to date. The Explorer I is characterized by its simple, yet functional design. It features a black dial with large luminous hour markers and hands, as well as a date window at 3 o'clock. The watch is powered by a Rolex caliber 3132 movement, which is known for its reliability and accuracy. The Explorer I is a versatile watch that can be worn for any occasion, whether it be formal or casual.