This is a great utility item. Precision made and so well thought out, that it really can be handled
like a thumb tip. The Sonata gimmick on which it is based is underused by magicians (I use the pure
gimmick for sponges, see Sponge Gimmick Goshman http://www.penguinmagic.com/p/S2778) and better yet
(compared to a TT) unknown to the lay. It predictably fades up and down with ~8 seconds of intense
light in-between. My problem with it is much as has been reported: I had to return the initial ones
shipped before getting one which worked. So, you're taking a chance that you will have to exchange
one or more before getting a working one. If you can factor this [open, re-pack, wait and chill]
into your purchase, you will love the final product. If you need it for the Sunday School show this
coming, well, Sunday, better start praying. Kyle Marlett has an hour long online video, which of
course you can download, during which he goes over technical and presentational details. High
quality video, with useful and IN FOCUS close-ups of the item.