With this format you can easily return to the last playback position, select chapters, and change narration speed. (garymclaren.com)
Reading options include the ability to change the font, font size, line spacing, and margins, while audiobook playback includes features such as narration speed and a built - in sleep timer if you like to listen to books before bed. (tabletpcreview.com)
Additional features in v4.3 include synchronized reading progress between the Audible and Kindle versions of a book, the option to increase narration speed by up to 2x, and bulk title downloading. (macnn.com)