The adjustments for the seat and back move together and only has a tightness adjustment aside from up and down. I am more likely to fall asleep in this chair than get work done.
The only reason I put 4 stars is simply because there are chairs clearly more expensive with high quality components all around. That being said this is a great chair light to move around everything works great. It has formed plastic arms and I don't believe it is real leather. That being said it was supremely easy to assemble (with some basic knowledge and the directions. Tool is provided so none needed. Once assembled the chair is very comfortable we'll see how long the cushion lasts but it definitely meets my needs. Points of interest are because it has some plastic it will flex slightly...not much but it does. I'm an average size person and I can tell but it isn't serious at all. If that bothers you then look for solid metal and pay significantly more $$.