Zenith

I haven't worn my P15 in 3-4 months, after putting it on today and arriving at school, I hear can hear a distinct squeak noise (like a mouse) eminating from the timepiece (ive narrowed it down to what appears to be the rotor) as I move my arm occasionally...  

The P15 sounds like as if there is quite a lot going on , when I shake it, while writing this. There is nothing wrong with that: Omegas, even Pateks sound sometimes like that too !

To my Omega, Vacheron, Seiko etc, but the new sound ive observed is worrying me a lot. In the middle of the normal sound, (like balls rolling the easiest way I can describe it) there is a sound similar to a mouse squeak that appears occasionaly, have you ... 

😱

I do not hear any high frequency noise from the movement. It is just the usual rattle. I only hear any noise if I hold the watch close to my ear. Away from my ear I do not hear anything

It can be a loose pivot due to wear (very unlikely with a P15 as it's so new) and more often caused by a loose screw in the movement winding system, or even the hold-down screws of the movement. Compare your watch to these photos of my watch using a loupe...  

Will video it tonight after arriving home and see

Just recorded the noise and sent it via email, thank you so much for checking in on this

the question is now: does it wind properly when you wear it? Cheers, Magnus

the first thing I did yesterday was to wind it via crown (to around 15-25 rotations). Then when I arrived in school that was the first time I noticed the noise (it is progressively getting more frequent). After arriving home, I set the timepiece aside and... 

me having it on my wrist for a lazy Saturday (around 10 hours of wear, with the mouse noise increasing in frequency) it kept 7-8 hours of power reserve (a little past overnight) stopping in the morning, when I picked it up in hand again to check the power...