Flash Pen by Alan Wong
Finally, an alternative to FISM Flash without the bulky and burdensome hook-up under your shirt.
With the simple push of a button, you provide a sudden burst of light to enhance a disappearance, reappearance, transposition, transformation and many other special effects.
Flash Pen comes with a rechargeable lithium battery and a DVD that demonstrates 16 ideas and routines developed by...
Gregory Wilson and some of his brainstorm buddies:
The only difficult part is deciding which flashy performance piece to use.