anti-magnetic protection from parachrom hairspring

[2ckwt1]

Hi,

I’m new to the TRF and need information on anti-magnetic watches/Rolex.

I am getting my BF a Rolex as a present, but he works with scanners all day. All his automatic watches are in repair because they became so magnetized. He had his last one for only 3 months and by that time it was running 4-6 hours fast each day.
(Finally we decided to google the problem and realized that he needs to stop wearing watches to work for the time being)

I have been doing research and know that the Rolex Milgauss is anti-magnetic because of the double cases. But having tired that one on…it doesn’t do anything for him (looks, feel, style was off). Also, his scanner isn’t a CT or MRI (nothing super powerful)…just kinda a regular 3D scanner… (no idea how many Telsa is in the machine)

We’re looking at getting a DayJust 2, he really likes that one. Seeing how it’s fitted with the parachrom hairspring, we would told by the AD that it would also be anti magnetic (but not as good as the Milgauss).

Can any one here shed some light on how much anti-magnetic protection the parachrom hairspring provides. Also, is it harmful for an automatic movement to be demagnetize many times?

Any help would be appreicated as I don't want to spend the money (he wants a gold and silver Dayjust2) on a watch that he will ruin/never wear.