As the name implies, Rolex Explorer series is born for the spirit of adventure. It has the function of distinguishing day and night. It is the key survival equipment for explorers and is suitable for those with the spirit of adventure. Rolex's cheapest Rolex Explorer II Series 16570-78790 white plate watch is one of Rolex's best-selling watches. ROLEX explorer type II explorer's watch Oyster type constant motion explorer type II is a popular choice for pioneers and adventurous people. The spirit of explorers When you can't distinguish between day and night, it is difficult to distinguish the actual time because there is only weak and dim sunlight in Antarctica all day long. For this reason, Rolex Explorer II is specially equipped with the function to distinguish between day and night. For those cave scientists who need to stay in dark caves during the day and use artificial lighting to work, this watch is a very critical survival equipment.