Embedded inside it is a batteryless RF switch, and the way it works is that upon the release of the spring mechanism inside, a tiny bit of power is generated for the 2.4GHz RF transmission ( ZigBee compatible), and whatever device is connected to the RF control outlet on the other end will receive the on or off signal.

ENGADGET: Mitsumi exhibits micro-vibration power generator and batteryless RF switch (video)

The acceptance of that product could be a boon for Qualcomm and a bear for a number of RF semiconductor companies, such as those that are key players in the PA, switch and filter space.

FORBES: Qualcomm Announcement Reignites Mobile M&A Possibilities