Do you know what kind of watches America president wear?

Do you know what kind of watches America president wear? Maybe the former-president of America Bush wear the cheapest watches in the all world head of state,he wears a Lange & Sohne 1815 Chronograph Mens Watch which just USD237.6,and he believes it will never loss this one.because there have marked his name George on his watch.it's can see American choose political lead not lordliness,but Civilians in the grass-roots, wear a cheap watch which maybe this Bush's wise. The post from replica watches Company.