This was, beforehand, what I was looking for to use my phone in bed at night as I've noticed that my hands and fingers get sore. The deal price was an incentive. I had read the reviews before purchase, so I knew that the 'cable' was sturdy and hard to maneuver, but it's way harder that expected and I had difficulty moving it around without making an effort. Inserting the ball into the holder head piece was also very difficult for me.
The product comes with minimal packaging and no instructions, and looks like a generic product. Nothing wrong with that!, but the lack of instruction leaflet makes it unnecessarily difficult to set it up. In fact, the holder is easy to set up if you know what to do. Basically, you hold the clip on to you furniture and, to fasten it and/or adjust to the thickness of the edge you're attaching it to, you have to screw/unscrew the tubular body part (see my photo). The holder looks very small, but the lower edge is expandable, so you can adjust it to fit a quite large phablet like mine (see my photo). If used horizontally, I can easily fit a tablet.
I ended returning the product due to the fact that the holding clip is quite wide and cannot hold my narrow bedside table edge, so it falls off. So, my advise to you is to check the depth of your furniture edges before purchase.