One button works with 2xAAA batteries. They can be connected to the edge of the magnet in a single line, then the sound of each subsequent button will start the presentation automatically. Each button can also be used separately.
You can draw on the button with a whiteboard marker or with a water-based felt-tip pen. One button records up to 10 seconds of sound. The buttons can be used, for example, to do group work, create simpler stories, save different facts, summarize, and so on.
Quantity: 2 sets (10 pcs)
Source: Info and photo Insplay.eu