- Perpetual Calendar -
This complication shows the accurate date in relation to the Gregorian calendar. This feature will be correct until 2100 and will require no alterations until then. This type of calendar compensates for shorter and longer months, as well as leap year.
- Power Reserve -
Power reserves kick in after a watch is fully wound. The reserves will help to ensure the watch does not have to be rewound on a constant basis. Many newer watches have this feature.
- Power Reserve Indicator -
This indicator shows the user how much time is left before their mechanical watch will be without power. When the power is about to run out, the watch user is able to rewind the watch and restore the energy needed.