*2.4 GHz Digital wireless transmission.
* High sensitivity.* Voice-activated transmitter.
* Powered by 3 + 3 x AAA batteries 1.5 V (not included) or via the supplied USB cable (adapter not included)
* Range up to 300 metres unobstructed.
* Place the transmitter unit approx. 1.5-2.0 metres from the child.
* The receiver unit has a belt clip which allows it to be carried around easily.