I have these two:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
The top one is a bluetooth ring clicker and charges via microusb cable. The bottom one is a bluetooth wireless presenter and uses one AAA battery. Both can use bluetooth and RF. They both work. I can use both of them to turn the pages forward or backward. I have found out that when I turn pages on the Boox Note 2 to read a book, a lot of times it is hard to do so. I end up having to do it a couple of times before the page turns to the next page or back. Not the case with a BT clicker or BT wireless presenter. I can set the Note 2 down and turn pages better. So very happy with both that I am keeping both of them.