TF IWC Portuguese Tourbillon Reverse Series, equipped with a customized version of IWC Auto 51900 automatic true tourbillon movement

. TF World Portugal Tourwheel Reverse Return Series . Equipped with a custom version of the World's autonomous 51900 fully automatic true tour wheel movement to achieve the original consistent calendar return and 3-bit power storage display of the true function configuration of the American crocodile leather strap.