Jazz Guitar

A jazz guitar is a guitar that is primarily used in (you guessed it) jazzmusic.
Dez guitars produce a soft and sultry tone that is typical for jazz music.
There are both electrically amplified and acoustic versions.
The easiest to recognizeble external feature is the characteristic f-keys that serve as sound hole.

The acoustic archtop guitar is also called jazz guitar.
This big guitar with arched top and bottom has a relatively shallow resonance box and also f-holes in the top.

It has steel strings, and it is used both as a plucking and as a strumming instrument.