Cartier

Hello all, In the last month or so I’ve noticed my Tank MC chrono hasn’t been keeping such good time. It’s about 2.5 years since purchase and was keeping reasonably good time, but only in the last month seems to be losing somewhere in the range of 15 or m... 

Best wishes Alkiro

I thought it could be that but doesn’t magnetisation usually speed up a watch, not slow it down? Maybe worth a try though, can that just be done at the boutique?

Best wishes Alkiro

Does anyone have a 1904 based watch and can comment on the accuracy? The first month of ownership was great. Gained/lost 1 second a week. I was very impressed/lucky. Then I went on holidays for six weeks and it remained unworn at home. It’s drifted ever s... 

Best wishes Alkiro

It can slow down as you have described and it will be progressive. So if you notice over the next few weeks you are losing gradually more seconds/day, more than likely it will be the main spring.

I have the Drive de Cartier with a 1904 based caliber and I have to ajust that too, every few days. Must say that to me, it is not worth the trouble, to bring the watch back to the BTQ or dealer. GEO