PiezoListen is the world's first piezoelectric type speaker that supports a wide range. Thanks to a world leading thinness of 0.49 mm, it can fit almost anywhere. The product causes the object to which it is glued to vibrate and thereby become a speaker. Because the entire surface vibrates, the sound has wide directivity, and uniform sound can be enjoyed at any location. You can also listen to music from Piezo Listen ™ piezo speakers.

Haptic devices are starting to be used for applications such as industrial or automotive monitors, displays on white goods such as washing machines, etc. However, these devices are also suitable for smartphones, notebook computers, and other ICT products.
TDK offers haptic device products utilizing the piezoelectric effect.