Precor's interview loop is very long and intense with several phone interviews (3-4) followed by at least one whole day in person, meeting several people in their office.
I had 2 phone interviews with this emplyer, the first one was more of a screening.
The second interview was rather long (about 1 hour) and most of it was just a conversation about project management techniques and tools. My project management certification is a few years old and I felt I had to read up on the tools, which turned out to have been a really good move. It was despite the high level not very formal but nice, we discussed business challenges.
I wasn't qualified for the job, but had written an excellent personal letter which made them give me a shot anyway. A nice experience, but I wish that I would have received feedback when I asked why I didn't make it.