Cartier Tank LC Quartz Movement?

[owl.]

Hi all, haven't posted here in a long time.

I am considering picking up a Cartier Tank LC in yellow gold.

The "problem" is that it is currently not available with a mechanical movement, so Quartz is my only option if I want a new Tank.

I say "problem" in parentheses, because I'm not sure that it's a problem.

As far as I know, the mechanical Cartier watches aren't COSC certified, and I'd hate to spend $12k+ on a mechanical Tank, then have it keep bad time.

So I'm fine with Quartz!

I wanted to ask you all....

Does anyone know what movement the Quartz Tank Louis Cartier uses?

I'd like to know how accurate it is.

Is it 5 seconds a month?

or 20 seconds a year?

Stuff like that.

Thanks!