The Panerai Radiomir GMT 3 Days Oro Rosso PAM 421 is by far one of our favorite Panerais as it combines several things we typically like to see in a Panerai timepiece. Some of the reasons why we love the Panerai PAM 421 is because it is fitted with an 18K red gold case, paired with a beautiful tobacco brown sandwich dial and it features a power reserve indicator. As far as looks, it really doesn't get any better.