Features a stainless steel case with 18k white gold fluted bezel. 
White dial with black Roman numerals and steel index hour markers. 
There are versions with the smooth bezel and those with an engine turned bezel, as well as some versions with a White Gold bezel. 
Has a polished fluted bezel.
It is 34mm in diameter and comes with an Oyster bracelet by default.
The Air-King does not have a Date.
In the 1970s, the Air-King was offered with a date (scarce!) and in gold & steel combinations. 
Those two variations likely ceased production since they are redundant next to the Date and Oyster Perpetual models.
This is an excellent mid-size Rolex, equally at home on a lady's wrist.
Automatic movement Caliber 3130 with a 42 hour power reserve.
COSC certified chronometer 
Various dial color options as well as hour marker variations were offered, so that some have Arabic or Roman numerals or a combination with stick index markers - even different colors on the markers. 
All-in-all this remains a Rolex, much beloved & always popular!
Water resistant to 100 meters / 330 feet