IWC movement specs

[tna23]

Hi all, I've just purchased a Portugueiser Chronograph with the in-house movement (calibre 69355) and on my first day of ownership, the watch ran 15 seconds fast. Does anyone know the performance specs of the movement? I can't seem to find this anywhere.

I realise that the watch is not chronometer certified, but I would have expected better performance than 15 sec.

Is it just a matter of letting it settle down over the time to something more acceptable, or should I take it back to the store for regulation?

Thanks in advance. IMG-20220420-WA0000.jpg

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