I was just wondering what it meant. I want to purchase one from the swatch chrono collection.

Answer:
What you are looking for is information complicationed Watches. The more complications in a watch, the more difficult it is to design, create, assemble and repair. A typical date-display chronograph might have up to 250 parts, while a particularly complex watch might have a thousand or more parts. Watches with several complications are referred to as grandes complications.
Answer:
I think you mean what is a chronometer.

Basically it's a fancy name for a clock, or watch, which keeps very good time.

A ship's chronometer is just a clock (no bells and whistles). These were the first chronometers and were developed to improve navigational accuracy at sea - where it is essential to know exactly when local noon is.

A chronometer worn on the wrist usually has all macho bits and pieces too.

Answer:
It is a watch that can canculate time for fuel use in navigation for airplanes.