I received the Kyasi New York pen, stylus, and laser light in exchange for honest review from Tomoson.
The New York Pen has a laser pointer on one end. The pen and the stylus are interchangeable. You have to unsnap the pen, from the base and turn it over and viola stylus.
For the laser, you have to unscrew the bottom half to insert the batteries. Installing the batteries was the tricky part. My fingers kept dropping the batteries. I also had a battery or two flip over while putting it in the battery compartment.
VIDEO DEMONSTRATION (My demo is Processing on YouTube)
You can purchase the Kyasi New York pen, using the link above. You also can check out their other styles of pens and products on the website as well.