Electric winder: info for IW377709 and IW377717 pilot chronographs

Hello,

Now that I've finally added the "Petit Prince" to my collection I thought it was time for a winder. I've read somewhere about the IWC pilot watches need unidirectional winding... is that correct?

If so, what direction and what's the recommended turns per day?

Can you please confirm for both the IW377709 and IW377717?

Thanks,
Davide

Hello Davide

Orbita winders has data suggesting 800 rotations/day CW (clockwise) which seems a little high.  I would recommend a variable speed winder and experiment with less rotations.