Helvetica Neue Extended is an extended version of the Helvetica Neue. This simply means that as the name suggests, the height and width of the fonts are slightly extended to make the otherwise simple looking font more elegant.
The straight and stylish strokes that are used in the typeface of this font make it suitable for designing. This font also combines aesthetics with technicality to make it one of the most widely used fonts. Amongst designers, those who create advertisement material use this font very often because of its exclusive style.