Air King: The Air-King is considered by many to be the most afforable member of the Rolex family of watches and is known for its simplicity and balanced styling. The current models come standard with an Oyster bracelet, no date, and are 34mm in diameter.Specifically designed for British Royal Air Force (RAF) pilots in the 1930s, the Air-King’s simplicity and large watch faces (32 to 34mm in diameter) were unordinary in watch design for the time—but Rolex founder Hans Wilsdorf felt large dials were essential for night flying. Given names like the Air Tiger, Air Lion and Air Giant, only the Air-King model remains today, however, many seek out the older models based on their airmen history. Original Air-King models were hand-wound and built with the classic 10.5 ligne hunter movement until they were upgraded to the more popular Oyster Perpetual (automatic) movement. Rolex Air-Kings place in the entry-level category of Rolex watches as far as price, yet these models are still stunning with chronographs, 31 jewel movements and scratch resistant sapphire crystals. Simplicity and durability make the Air-King popular and functional and the waterproof cases endure in water and outdoor sporting.