Not sure if that was XtraFlex2, came in strange packaging without mentioning a manufacturer anywhere. Quality is awful, metal spin holding the clip drop offs after opening the clip for 3-4 times.
Didn't get how is that Kindle Version. There is simply no way to clip it to kindle - clip is too big and in addition to that can't grip kindle as it's curving thinner to the edges. Probably you need a case for kindle and then clip the light to the case, but like using mine without.
Won't return it because I found it useful when reading real hardcover books.