Sahara Desert: Covering almost one-third of the continent, the Sahara is the largest desert in the world at approximately 3,500,000 sq. miles (9,065,000 sq. km) in total size. Topography includes areas of rock-strew plains, rolling sand dunes and numerous sand seas.overing almost one-third of the continent, the Sahara is the largest desert in the world at approximately 3,500,000 sq. miles (9,065,000 sq. km) in total size.
You are way off mark. I collect watches (including Rolex). I am what you call a Horologist. Anyone who tells you that you can identify a Rolex by how the second hand moves knows nothing about Rolex. You can get watches for $10 with nice smooth moving second hands. 1. Some 70's era real Rolex do use batteries. If the watch says Oysterquartz on the front then it is a battery powered watch. 2. You can only get the battery at a specialty watch shop. The battery type was common in the 70's but not today. 3. If the watch is 40 years old, then the battery has leaked inside by now.
Rolex used to use the same steel as everyone else, but in around 2003 they moved their entire steel production to 904L steel. In 1988 they released their first 904L steel watch with a few versions of the Sea-Dweller. 904L steel is more rust and corrosion resistant, and is somewhat harder than other steels. Most important to Rolex, is that 904L steel, when worked properly, is able to take (and hold) polishes incredibly well. If you've ever noticed that steel on a Rolex watch looks different than other watches, it is because of 904L steel, and how Rolex has learned to work with it.