Basically, these are annotated images that can be used for study that also include audio.
They are easy to make, and English Language Learners could use them to label images. There are quite a few other tools that let you do this (see The Best Online Tools For Using Photos In Lessons ). However, none of the others include the features of being able to record audio and use them as a studying tool. Students could create them as “games” that their classmates can “play.”
Here’s an example of a simple one on the site. Below it you can view a short video from Quizlet about this new feature.