I have 2 - one that runs on a battery and one that plugs in.
I have used the battery device for
several years and am not that confident yet with the plug in; the button has been an issue. Reading
some of the comments I am going to use the plug in carefully (and have the battery op in my pocket
for an emergency backup). I love the device because it is so close up and personal and I am always
make it 100% fun for the participant. Thanks