A friend of mine purchased a preowned Audimars Piquet Royal Oak last week. The watch is all stainless with a quartz movement. He told me that this Audimars retails for quite a few thousand dollars new, but I questioned the authenicity of this watch. I've never seen a Royal Oak mens watch with a 45+mm case with a quartz movement. I was unaware of Audimars producing a Royal Oak model with a quartz movement altogether. In addition, I asked to see how the chronograph feature worked. He pushed the upper pusher and the flyback hand just rotated in a continuous sweep. It looked like my wife's Michele. The chronograph feature appears to serve no purpose, other than looking good. Can anyone tell me if Audimars actually produces a Royal Oak with a quartz movement, and if so, shouldn't the chrongraph feature operate the same as the mechanical models? Thanks in advance for your help. If my friend purchased a fake, I'd like to let him know as soon as possible. Thanks in advance for your help.