Rolex developed the quickset feature in 1974 in order to solve a pressing issue with their date models.  Having to set the date aperture in a non quickset timepiece is aggravating.  You would have to rotate the crown over and over again until the actual day of the month appeared in the aperture.  this would mean you would have to rotate the crown up to 24 times in order to get to change the date window one day forwards or backwards.  Imagine having to change the day 10 days away.  You would need to rotate the crown 240 times.  Exhausting.

The Rolex 3035 became the primary caliber that Rolex used featuring the quickset feature set.  It allows the wearer to quickly pull out the crown and adjust the date forwards or backwards with quickness.  This saves tremendous time and frustration.  Although Rolex was late to the game, the new feature set became a mainstay of the Rolex line from this point forward.

The caliber 3035 was built with 12.5 lignes and 27 jewels.  It beats to a 28,800 frequency and has a 48 hour power reserve.

The caliber was a self-winding unit, fully certified as a chronometer with COSC, and utilized a Breguet hairspring, Kif shock protection for its balance and escape wheel.  It was produced primarily between 1977 and 1988.