Everything works out of the box--the cables are included the QC 3. line of sight not required. 5/ 10 and ordered the 10/10. In general the seat is comfortable but there are drawbacks for larger persons! I will see have to see how long it lasts and will update on long term use. its pretty easy and hopefully my pictures are a little better to illustrate the items to remove. 5 wouldve been perfect but thats just me being picky. Will see how warranty goes before another update. It was updated/upgraded in 2018 I believe and had some great reviews. the earbuds loosely to hear my surroundings, which felt comfortable enough and I only had to adjust them once or twice during my hour long routine.