After looking at the website that sells these "lightsabers", it's quite easy to see that these aren't the actual lightsaber replicas that people buy. These do not have the blade that is lit up to make them appear to be blades of plasma, nor does it say that these actually are lightsabers. Only one model from what I looked at vaguely resembled the hilt of a lightsaber even then it was only a vague resemblance.
To the OP: Read more before you post something like this so you look less like a fool when people actually click more than just the first link.
Places that make the actual replicas: Welcome to www.Force-Fx.com
Video of what they actually look like to show that this article is full of shit:
Note that these use LEDs.