Many Tag Heuer are equipped with additional functions such as the flyback function, split-second, moon phase, date display and other complications. Many models feature an automatic winding mechanism that is purely mechanical (i.e. using no electronic components).

This means that special permits are required to trade or export daidaihua plants or seeds in raw or processed forms. Appendix II is a list of species which are not currently threatened by extinction, but have the potential to become threatened if trade is not closely controlled.